Merge pull request #5615 from swiftwasm/dependabot/github_actions/actions/checkout-6

Bump actions/checkout from 5 to 6

Author: kateinoigakukun

.github/workflows/distribute-toolchain.yml

@@ -15,7 +15,7 @@ jobs:
   distribution:
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           repository: swiftwasm/swiftwasm-build
           path: swiftwasm-build