CI update checkout version

.github/workflows/changelog-generator.yml

@@ -5,13 +5,16 @@ on:
 
   workflow_dispatch:
 
+permissions:
+  contents: write  # Set the contents permission to write
+
 jobs:
   changelog:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
-          fetch-depth: 0
+          ref: ${{ github.head_ref }}
       - name: "✏️  Generate release changelog"
         uses: heinrichreimer/[email protected]
         with: