chore(deps): update redhat-plumbers-in-action/differential-shellcheck action to v5

Author: renovate[bot]

.github/workflows/shellcheck.yml

@@ -18,7 +18,7 @@ jobs:
           fetch-depth: 0
 
       - name: 🐞 Differential shell-check
-        uses: redhat-plumbers-in-action/differential-shellcheck@v4
+        uses: redhat-plumbers-in-action/differential-shellcheck@v5
         with:
           severity: warning
           token: ${{ secrets.GITHUB_TOKEN }}