Update changelog.yml

.github/workflows/changelog.yml

@@ -36,7 +36,7 @@ jobs:
       - name: Create branch for changelog
         run: |
           BRANCH_NAME="changelog-update-${{ steps.random-string.outputs.RANDOM_BRANCH_HASH }}"
-          git checkout -b "$BRANCH_NAME"
+          git checkout -b ${{ env.BRANCH_NAME }}
           git config user.name 'github-actions[bot]'
           git config user.email 'github-actions[bot]@users.noreply.github.com'
 
@@ -48,7 +48,7 @@ jobs:
 
       - name: Push changelog branch
         run: |
-          git push origin "$BRANCH_NAME"
+          git push origin ${{ env.BRANCH_NAME }}
 
       - name: Create Pull Request
         uses: peter-evans/create-pull-request@v7