Update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/node.js.yml

@@ -10,7 +10,7 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install dependencies
         uses: ./.github/actions/install
@@ -20,7 +20,7 @@ jobs:
   types:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install dependencies
         uses: ./.github/actions/install
@@ -33,7 +33,7 @@ jobs:
       matrix:
         node-version: [20.x, 22.x, 24.x]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install dependencies
         uses: ./.github/actions/install