Merge pull request #405 from domaframework/renovate/actions-checkout-6.x

Update actions/checkout action to v6

Author: nakamura-to

.github/workflows/gradle.yml

@@ -12,7 +12,7 @@ jobs:
     timeout-minutes: 30
 
     steps:
-    - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
 
     - name: Set up JDK 17
       uses: actions/setup-java@dded0888837ed1f317902acf8a20df0ad188d165 # v5