Update actions/checkout action to v6 (#37782)

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

.github/workflows/lint-ruby.yml

@@ -35,7 +35,7 @@ jobs:
 
     steps:
       - name: Clone repository
-        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
 
       - name: Set up Ruby
         uses: ruby/setup-ruby@09a7688d3b55cf0e976497ff046b70949eeaccfd # v1