chore(deps): update actions/checkout action to v4

Author: renovate[bot]

.github/workflows/main.yml

@@ -10,7 +10,7 @@ jobs:
         node: [16, 18, 20]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-node@v3
         with:
           node-version: ${{ matrix.node }}
@@ -28,7 +28,7 @@ jobs:
     needs: test
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-node@v3
         with:
           registry-url: https://registry.npmjs.org