chore(deps): Update actions/checkout action to v6 (#6)

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

Author: renovate[bot]

.github/workflows/build.yml

@@ -26,7 +26,7 @@ jobs:
       id-token: write
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       # Uses the `docker/login-action` action to log in to the Container
       # registry registry using the account and password that will publish the
       # packages. Once published, the packages are scoped to the account defined here.