Update actions/checkout action to v4

Author: renovate[bot]

.github/workflows/build.yml

@@ -17,7 +17,7 @@ jobs:
         node-version: [12.x]
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v3
         with:
@@ -46,7 +46,7 @@ jobs:
 
     steps:
       - name: 'Checkout GitHub Action'
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Use Node.js ${{ env.NODE_VERSION }}
         uses: actions/setup-node@v3
@@ -79,7 +79,7 @@ jobs:
 
     steps:
       - name: 'Checkout GitHub Action'
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Use Node.js ${{ env.NODE_VERSION }}
         uses: actions/setup-node@v3