Update actions/checkout from v4.1.1 to v6.0.2 (#118)

Node 20 reaches EOL in April 2026 and GitHub will force Node 24
after June 2, 2026. v6 already uses Node 24 natively.

Author: SeanTAllen

.github/workflows/lint-action-workflows.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v6.0.2
       - name: Check workflow files
         uses: docker://ghcr.io/ponylang/shared-docker-ci-actionlint:20260311
         with:

.github/workflows/pr.yml

@@ -14,7 +14,7 @@ jobs:
     name: Lint bash, docker, markdown, and yaml
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v6.0.2
       - name: Lint codebase
         uses: docker://github/super-linter:v3.8.3
         env:
@@ -29,47 +29,47 @@ jobs:
     name: Validate actionlint Docker image builds
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v6.0.2
       - name: Docker build
         run: "docker build --pull --file=actionlint/Dockerfile ."
 
   validate-emacs-mode-release-image-builds:
     name: Validate emacs-mode release Docker image builds
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v6.0.2
       - name: Docker build
         run: "docker build --pull --file=emacs-mode-release/Dockerfile ."
 
   validate-release-a-library-image-builds:
     name: Validate release-a-library Docker image builds
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v6.0.2
       - name: Docker build
         run: "docker build --pull --file=release-a-library/Dockerfile ."
 
   validate-x86-64-unknown-linux-builder-with-libressl-3_9_2-image-builds:
     name: Validate x86-64-unknown-linux-builder-with-libressl-3.9.2 Docker image builds
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v6.0.2
       - name: Docker build
         run: "docker build --pull --file=x86-64-unknown-linux-builder-with-libressl-3.9.2/Dockerfile ."
 
   validate-x86-64-unknown-linux-builder-with-openssl_1_1_1w-image-builds:
     name: Validate x86-64-unknown-linux-builder-with-openssl_1.1.1w Docker image builds
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v6.0.2
       - name: Docker build
         run: "docker build --pull --file=x86-64-unknown-linux-builder-with-openssl_1.1.1w/Dockerfile ."
 
   validate-x86-64-unknown-linux-builder-with-openssl_3_4_1-image-builds:
     name: Validate x86-64-unknown-linux-builder-with-openssl_3.4.1 Docker image builds
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v6.0.2
       - name: Docker build
         run: "docker build --pull --file=x86-64-unknown-linux-builder-with-openssl_3.4.1/Dockerfile ."
 
@@ -78,7 +78,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v6.0.2
       - name: Set up buildx
         # v3.10.0
         uses: docker/setup-buildx-action@b5ca514318bd6ebac0fb2aedd5d36ec1b5c232a2
@@ -90,7 +90,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v6.0.2
       - name: Set up buildx
         # v3.10.0
         uses: docker/setup-buildx-action@b5ca514318bd6ebac0fb2aedd5d36ec1b5c232a2
@@ -102,7 +102,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v6.0.2
       - name: Set up buildx
         # v3.10.0
         uses: docker/setup-buildx-action@b5ca514318bd6ebac0fb2aedd5d36ec1b5c232a2
@@ -114,7 +114,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v6.0.2
       - name: Set up buildx
         # v3.10.0
         uses: docker/setup-buildx-action@b5ca514318bd6ebac0fb2aedd5d36ec1b5c232a2

.github/workflows/rebuild-ponyc-based-images.yml

@@ -22,7 +22,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v6.0.2
       - name: Set up Docker Buildx
         # v3.10.0
         uses: docker/setup-buildx-action@b5ca514318bd6ebac0fb2aedd5d36ec1b5c232a2
@@ -57,7 +57,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v6.0.2
       - name: Set up Docker Buildx
         # v3.10.0
         uses: docker/setup-buildx-action@b5ca514318bd6ebac0fb2aedd5d36ec1b5c232a2
@@ -94,7 +94,7 @@ jobs:
       cancel-in-progress: true
 
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v6.0.2
       - name: Login to GitHub Container Registry
         # v2.2.0
         uses: docker/login-action@5139682d94efc37792e6b54386b5b470a68a4737
@@ -128,7 +128,7 @@ jobs:
       cancel-in-progress: true
 
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v6.0.2
       - name: Login to GitHub Container Registry
         # v2.2.0
         uses: docker/login-action@5139682d94efc37792e6b54386b5b470a68a4737
@@ -163,7 +163,7 @@ jobs:
       cancel-in-progress: true
 
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v6.0.2
       - name: Login to GitHub Container Registry
         # v2.2.0
         uses: docker/login-action@5139682d94efc37792e6b54386b5b470a68a4737
@@ -197,7 +197,7 @@ jobs:
       cancel-in-progress: true
 
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v6.0.2
       - name: Login to GitHub Container Registry
         # v2.2.0
         uses: docker/login-action@5139682d94efc37792e6b54386b5b470a68a4737
@@ -231,7 +231,7 @@ jobs:
       cancel-in-progress: true
 
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v6.0.2
       - name: Login to GitHub Container Registry
         # v2.2.0
         uses: docker/login-action@5139682d94efc37792e6b54386b5b470a68a4737
@@ -266,7 +266,7 @@ jobs:
       cancel-in-progress: true
 
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v6.0.2
       - name: Login to GitHub Container Registry
         # v2.2.0
         uses: docker/login-action@5139682d94efc37792e6b54386b5b470a68a4737
@@ -300,7 +300,7 @@ jobs:
       cancel-in-progress: true
 
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v6.0.2
       - name: Login to GitHub Container Registry
         # v2.2.0
         uses: docker/login-action@5139682d94efc37792e6b54386b5b470a68a4737
@@ -334,7 +334,7 @@ jobs:
       cancel-in-progress: true
 
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v6.0.2
       - name: Login to GitHub Container Registry
         # v2.2.0
         uses: docker/login-action@5139682d94efc37792e6b54386b5b470a68a4737
@@ -368,7 +368,7 @@ jobs:
       cancel-in-progress: true
 
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v6.0.2
       - name: Login to GitHub Container Registry
         # v2.2.0
         uses: docker/login-action@5139682d94efc37792e6b54386b5b470a68a4737

.github/workflows/release-a-library-update.yml

@@ -17,7 +17,7 @@ jobs:
     name: Update release-a-library
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v6.0.2
       - name: Login to GitHub Container Registry
         # v2.2.0
         uses: docker/login-action@5139682d94efc37792e6b54386b5b470a68a4737