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

Author: renovate[bot]

.github/workflows/default.yaml

@@ -6,7 +6,7 @@ jobs:
   build:
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
       - name: Setup Go
         uses: actions/setup-go@0aaccfd150d50ccaeb58ebd88d36e91967a5f35b # v5
         with: