Bump checkout action to v4

.github/workflows/build-k3s.yaml

@@ -22,7 +22,7 @@ jobs:
     timeout-minutes: 20
     steps:
     - name: Checkout K3s
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Build K3s binary
       run: |
         DOCKER_BUILDKIT=1 SKIP_AIRGAP=1 SKIP_VALIDATE=1 make

.github/workflows/install.yaml

@@ -39,7 +39,7 @@ jobs:
       INSTALL_K3S_SKIP_DOWNLOAD: binary
     steps:
       - name: "Checkout"
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with: {fetch-depth: 1}
       - name: Set up vagrant and libvirt
         uses: ./.github/actions/vagrant-setup

.github/workflows/integration.yaml

@@ -39,7 +39,7 @@ jobs:
       max-parallel: 3
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         fetch-depth: 1
     - name: Install Go

.github/workflows/nightly-install.yaml

@@ -25,7 +25,7 @@ jobs:
       INSTALL_K3S_CHANNEL: ${{ matrix.channel }}
     steps:
       - name: "Checkout"
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with: {fetch-depth: 1}
       - name: Set up vagrant and libvirt
         uses: ./.github/actions/vagrant-setup

.github/workflows/unitcoverage.yaml

@@ -32,7 +32,7 @@ jobs:
     timeout-minutes: 20
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         fetch-depth: 1
     - name: Install Go

.github/workflows/updatecli.yaml

@@ -20,7 +20,7 @@ jobs:
     if: github.ref == 'refs/heads/master'
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Install Go
         uses: actions/setup-go@v4