ci: fix after merge backporting, use actions/git-backporting

close #1042

.forgejo/workflows/backport.yml

@@ -7,26 +7,29 @@ on:
       - labeled
 
 jobs:
-  backport:
-    runs-on: docker
-    container:
-      image: node:20-bookworm
-    # Only react to merged PRs for security reasons.
-    # See https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#pull_request_target.
+  backporting:
     if: >
       github.event.pull_request.merged
-      && (
-        github.event.action == 'closed'
-        || (
-          github.event.action == 'labeled'
-          && contains(github.event.label.name, 'backport')
-        )
-      )
+      &&
+      contains(toJSON(github.event.pull_request.labels), 'backport/v')
+    runs-on: docker
+    container:
+      image: 'data.forgejo.org/oci/node:20-bookworm'
     steps:
-      - name: send backport if the label "backport {branch}" is present
-        if: secrets.WEBSITETOKEN != ''
-        uses: https://github.com/tibdex/backport@v2
+      - name: event info
+        run: |
+          cat <<'EOF'
+          ${{ toJSON(github) }}
+          EOF
+      - uses: https://data.forgejo.org/actions/git-backporting@v4.8.4
         with:
-          github_token: ${{ secrets.WEBSITETOKEN }}
-          head_template: 'backport/<%= base %>/pr-<%= number %>'
-          label_pattern: '^backport/(?<base>([^ ]+))$'
+          target-branch-pattern: '^backport/(?<target>(v.*))$'
+          strategy: ort
+          strategy-option: find-renames
+          cherry-pick-options: -x
+          auth: ${{ secrets.WEBSITETOKEN }}
+          pull-request: ${{ github.event.pull_request.url }}
+          auto-no-squash: true
+          enable-err-notification: true
+          git-user: forgejo-backport-action
+          git-email: forgejo-backport-action@noreply.codeberg.org