chore: automatically bump charts (#8537)

# Which Problems Are Solved

Bumping charts needs a manual trigger.

# How the Problems Are Solved

The charts bump workflow is run after every ZITADEL release.

Co-authored-by: Livio Spring <livio.a@gmail.com>

.github/workflows/release.yml

@@ -126,3 +126,23 @@ jobs:
         GH_TOKEN: ${{ steps.generate-token.outputs.token }}
       run: |
         gh workflow -R zitadel/homebrew-tap run update.yml -f runId=${RUN_ID} -f version=${VERSION}
+
+  helm-chart:
+    runs-on: ubuntu-22.04
+    needs: version
+    if: ${{ github.ref_name == 'next' }}
+    continue-on-error: true
+    steps:
+      - name: generate token
+        uses: tibdex/github-app-token@v2
+        id: generate-token
+        with:
+          app_id: ${{ secrets.APP_ID }}
+          private_key: ${{ secrets.APP_PRIVATE_KEY }}
+      - name: Trigger Chart Bump
+        env:
+          VERSION: ${{ needs.version.outputs.version }}
+          RUN_ID: ${{ github.run_id }}
+          GH_TOKEN: ${{ steps.generate-token.outputs.token }}
+        run: |
+          gh workflow -R zitadel/zitadel-charts run bump.yml