chore(deps): update actions/checkout action to v5 (#136)

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

Author: renovate[bot]

.github/workflows/build.yaml

@@ -31,7 +31,7 @@ jobs:
             cnpg_version: 14.18-22
     steps:
       - name: Checkout
-        uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4.3.0
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Get CloudNativePG version
         id: cnpg
         env: