Upgrade: Bump fuxingloh/multi-labeler from 3 to 4

Bumps [fuxingloh/multi-labeler](https://github.com/fuxingloh/multi-labeler) from 3 to 4.
- [Release notes](https://github.com/fuxingloh/multi-labeler/releases)
- [Commits](fuxingloh/multi-labeler@v3...v4)

---
updated-dependencies:
- dependency-name: fuxingloh/multi-labeler
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/pr-check.yml

@@ -37,6 +37,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Assign and check labels
-        uses: fuxingloh/multi-labeler@v3
+        uses: fuxingloh/multi-labeler@v4
         with:
           config-path: .github/pr-labeler.yml