build: Added ref optional input to release workflow

Author: Julien Ruaux

.github/workflows/release-branch.yml

@@ -6,6 +6,10 @@ on:
       version:
         description: "Release version"
         required: true
+      ref:
+        description: "Branch, tag or SHA to checkout"
+        required: false
+        default: 'master'
 jobs:
   release:
     name: Release
@@ -14,6 +18,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v3
         with:
+          ref: ${{ github.event.inputs.ref }}
           fetch-depth: 0
 
       - name: Set up Java
@@ -61,7 +66,7 @@ jobs:
           git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"
           git config --global user.name "GitHub Action"
           git commit -a -m "Releasing version $VERSION"
-          git push origin master
+          git push origin ${{ github.event.inputs.ref }}
 
       - name: JReleaser output
         if: always()