Fix release workflow: ensure helm chart is uploaded before release-drafter (#14364)

Add release-helm-chart as a dependency for release-drafter so the Helm
chart is always uploaded to the release first. This prevents race
conditions where release-drafter could create the release before the
helm chart job, causing softprops/action-gh-release to fail with
'already_exists' and the helm chart to be missing from the release.

Fixes #14337

Author: valentijnscholten

.github/workflows/release-2-tag-docker-push.yml

@@ -71,7 +71,7 @@ jobs:
     secrets: inherit
 
   release-drafter:
-    needs: publish-container-digests
+    needs: [publish-container-digests, release-helm-chart]
     uses: ./.github/workflows/release-drafter.yml
     with:
       version: ${{ inputs.release_number }}