Fix publish workflow

Author: qboileau

.github/workflows/publish_release.yml

@@ -1,5 +1,5 @@
 name: Publish release
-run-name: Publish release ${GITHUB_REF#refs/*/} on ${{ github.sha }} by @${{ github.actor }}
+run-name: Publish release ${{ github.ref_name }} on ${{ github.sha }} by @${{ github.actor }}
 
 on:
   push:
@@ -14,16 +14,17 @@ jobs:
       contents: read
       packages: write
     steps:
-      - name: Get the Github Release version
-        run: |
-          ref=${GITHUB_REF#refs/*/}
-          git show-ref --verify refs/tags/${ref} || { echo "Ref ${GITHUB_REF} is not a tag" ; exit 1; }
-          echo "RELEASE_VERSION=${ref}" >> "$GITHUB_ENV"
-
-      - name: Checkout tag ${{ env.RELEASE_VERSION }}
+      - name: Checkout
         uses: actions/checkout@v4
-        with:
-          ref: ${{ env.RELEASE_VERSION }}
+
+      - name: Check release version
+        run: |
+          if [[ "${{ github.ref_type }}" == "tag" ]]; then
+            echo "RELEASE_VERSION=${GITHUB_REF#refs/*/}" >> "$GITHUB_ENV"
+          else
+            echo "Ref ${GITHUB_REF} is not a tag" 
+            exit 1
+          fi
 
       - name: Set up JDK 21
         uses: actions/setup-java@v4