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

Author: renovate[bot]

.github/workflows/test.yml

@@ -11,7 +11,7 @@ jobs:
                 node-version: [lts/*]
 
         steps:
-            - uses: actions/checkout@v5
+            - uses: actions/checkout@v6
             - name: Use Node.js ${{ matrix.node-version }}
               uses: actions/setup-node@v6
               with: