[CI] Update checkout action to v4

Author: malfet

.github/workflows/build.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 40
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Update apt
         run: sudo apt update
       - name: Install ninja
@@ -28,7 +28,7 @@ jobs:
     runs-on: macos-latest
     timeout-minutes: 40
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Install ninja
         run: brew install ninja
       - name: Configure and build
@@ -38,7 +38,7 @@ jobs:
     runs-on: windows-latest
     timeout-minutes: 40
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Install ninja
         run: choco install ninja
       - name: Configure and build
@@ -49,7 +49,7 @@ jobs:
     runs-on: windows-latest
     timeout-minutes: 40
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: 'x64-uwp(Debug)'
         uses: lukka/run-cmake@v10
         with:
@@ -77,7 +77,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 40
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Update apt
         run: sudo apt update
       - name: Install ninja
@@ -106,7 +106,7 @@ jobs:
 
     name: ${{ matrix.build_props[0] }}
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Setup QEMU
         uses: docker/setup-qemu-action@v3.0.0
       - name: Build cpuinfo in ${{ matrix.build_props[1] }}