Update Github action workflows to use actions/checkout@v3

Due to the Node 12 runtime being deprecated, jobs are required to move
to actions/checkout@v3 which uses Node 16 runtime.

See: https://github.blog/changelog/2022-09-22-github-actions-all-actions-will-begin-running-on-node16-instead-of-node12/

.github/workflows/build.yml

@@ -26,7 +26,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     - name: Install dependencies (Ubuntu)
       run: ./.github/scripts/install-dependencies-ubuntu.sh

.github/workflows/codeql-analysis.yml

@@ -14,7 +14,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
       with:
         # We must fetch at least the immediate parents so that if this is
         # a pull request then we can checkout the head.

.github/workflows/doxygen.yml

@@ -12,7 +12,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     - name: Install dependencies
       run: ./.github/scripts/install-dependencies-ubuntu.sh

.github/workflows/kernel.yml

@@ -20,7 +20,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     - name: Install kernel dependencies
       run: ./.github/scripts/install-kernel-dependencies.sh

.github/workflows/release.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Install dependencies
         run: ./.github/scripts/install-dependencies-ubuntu.sh