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

Author: renovate[bot]

.github/workflows/autofix.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: pnpm/action-setup@v4
         with:

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
         node-version: [20]
         os: [ubuntu-latest, windows-latest, macos-latest]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: pnpm/action-setup@v4
         with: