github: Switch to actions/checkout@v3

.github/workflows/ci.yml

@@ -49,7 +49,7 @@ jobs:
                              swig
 
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     - name: Build qemu_x86_virt
       timeout-minutes: 5
@@ -113,7 +113,7 @@ jobs:
                              sshpass
 
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     - name: Build ${{ matrix.suite }} ${{ matrix.arch }}
       timeout-minutes: 5
@@ -142,7 +142,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Set up QEMU
         timeout-minutes: 1

.github/workflows/docker.yml

@@ -15,7 +15,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Set up QEMU
         timeout-minutes: 1

.github/workflows/prebuilt.yml

@@ -64,7 +64,7 @@ jobs:
                              wget
 
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     - name: Download
       timeout-minutes: 1