chore(deps): update actions/checkout action to v6.0.2

Author: dslab-renovate[bot]

.github/workflows/renovate.yaml

@@ -21,7 +21,7 @@ jobs:
           owner: ${{ github.repository_owner }}
           repositories: 'wordpress'
       - name: Checkout
-        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - name: Self-hosted Renovate
         uses: renovatebot/github-action@03026bd55840025343414baec5d9337c5f9c7ea7 # v44.0.4
         with: