Always run commit step in update PR workflow (#3208)

`update-chrome` is a requirement for `commit-result`, but it turns out
that if `update-chrome` is skipped, so is `commit-result`. Adding the if
condition makes the job always run (assuming it didn't fail or didn't
get cancelled).

Author: Mrtenz

.github/workflows/update-pull-request.yml

@@ -223,7 +223,9 @@ jobs:
   commit-result:
     name: Commit result
     runs-on: ubuntu-latest
+    if: ${{ !failure() && !cancelled() && needs.is-fork-pull-request.outputs.IS_FORK == 'false' }}
     needs:
+      - is-fork-pull-request
       - prepare
       - dedupe-yarn-lock
       - regenerate-lavamoat-policies