add ARMORED flag

Author: erosb

.github/workflows/maven-central-publish.yml

@@ -32,3 +32,4 @@ jobs:
           JRELEASER_GPG_SECRET_KEY: ${{ secrets.MAVEN_GPG_PRIVATE_KEY }}
           JRELEASER_GPG_PUBLIC_KEY: ${{ secrets.MAVEN_GPG_PUBLIC_KEY }}
           JRELEASER_GITHUB_TOKEN: ${{ secrets.JRELEASER_GITHUB_TOKEN }}
+          JRELEASER_GPG_ARMORED: 'true'