Update actions/checkout action to v7 (#1525)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
     outputs:
       matrix: ${{ steps.set-matrix.outputs.matrix }}
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: actions/setup-node@v6
         with:
           # This version is different, because we want newer node features
@@ -34,7 +34,7 @@ jobs:
     timeout-minutes: 10
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: pnpm/action-setup@v4
       - uses: actions/setup-node@v6
         with:
@@ -57,7 +57,7 @@ jobs:
           - { name: "Vite + Compat", dir: './test-apps/vite-with-compat', cmd: 'pnpm build:tests && pnpm test:exam' }
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: pnpm/action-setup@v4
       - uses: actions/setup-node@v6
         with:
@@ -77,7 +77,7 @@ jobs:
       matrix: ${{fromJson(needs.setup.outputs.matrix)}}
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: pnpm/action-setup@v4
       - uses: actions/setup-node@v6
         with:
@@ -92,7 +92,7 @@ jobs:
     timeout-minutes: 10
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: pnpm/action-setup@v4
       - uses: actions/setup-node@v6
         with:
@@ -118,7 +118,7 @@ jobs:
           - ember-canary
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: pnpm/action-setup@v4
       - uses: actions/setup-node@v6
         with:

.github/workflows/gh-pages.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: pnpm/action-setup@v4
       - uses: actions/setup-node@v6
         with:

.github/workflows/publish.yml

@@ -26,7 +26,7 @@ jobs:
       attestations: write
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: pnpm/action-setup@v4
       - uses: actions/setup-node@v6
         with:

.github/workflows/release.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: actions/setup-node@v6
         with:
           node-version: 18

test-apps/broccoli/.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
     timeout-minutes: 10
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: Install Node
         uses: actions/setup-node@v6
         with:
@@ -35,7 +35,7 @@ jobs:
     timeout-minutes: 10
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: Install Node
         uses: actions/setup-node@v6
         with:

test-apps/embroider3-webpack/.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
     timeout-minutes: 10
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: Install Node
         uses: actions/setup-node@v6
         with:
@@ -35,7 +35,7 @@ jobs:
     timeout-minutes: 10
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: Install Node
         uses: actions/setup-node@v6
         with: