chore(deps): update actions/checkout action to v5

Author: renovate[bot]

.github/workflows/gitleaks-action.yml

@@ -16,7 +16,7 @@ jobs:
     name: gitleaks
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
       - uses: gitleaks/gitleaks-action@v2