Bump jpmcb/prow-github-actions from 1.1.3 to 2.0.0

Bumps [jpmcb/prow-github-actions](https://github.com/jpmcb/prow-github-actions) from 1.1.3 to 2.0.0.
- [Release notes](https://github.com/jpmcb/prow-github-actions/releases)
- [Commits](https://github.com/jpmcb/prow-github-actions/compare/v1.1.3...v2.0.0)

---
updated-dependencies:
- dependency-name: jpmcb/prow-github-actions
  dependency-version: 2.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/prow-action.yml

@@ -9,7 +9,7 @@ jobs:
   execute:
     runs-on: ubuntu-latest
     steps:
-      - uses: jpmcb/prow-github-actions@v1.1.3
+      - uses: jpmcb/prow-github-actions@v2.0.0
         with:
           # TODO: before allowing the /lgtm command, see if we can block merging if changelog labels are missing.
           prow-commands: |