chore(deps): update teneplaysofficial/sheriff action to v5 (#15)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/tests.yml

@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Validate PR title
-        uses: teneplaysofficial/sheriff@v4
+        uses: teneplaysofficial/sheriff@v5
 
   test:
     runs-on: ubuntu-latest