fix(release-gha): Fixing git commands and using action to checkout co…

…rrectly

.github/workflows/release.yml

@@ -11,10 +11,12 @@ jobs:
     if: github.event.pull_request.merged == true
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout
+      - name: Checkout 'gh-pages' branch
         uses: actions/checkout@v4
         with:
+          ref: gh-pages
           fetch-depth: 0
+          persist-credentials: true
 
       - name: Configure Git
         run: |
@@ -46,17 +48,10 @@ jobs:
       - name: Deploy to GitHub Pages
         if: env.has_release_label == 'true'
         run: |
-          git fetch origin
-
-          git checkout gh-pages
-
-          git pull origin gh-pages --rebase
 
           git pull origin main --rebase
-
           helm package . --destination charts/
           helm repo index . --url https://getlago.github.io/charts
-
           git add .
           git commit -m "Update Helm repo index after release"
           git push origin gh-pages