Update actions/checkout action to v4

Author: renovate[bot]

.github/workflows/build.yaml

@@ -21,7 +21,7 @@ jobs:
     steps:
     - id: 'step-0'
       name: 'Check out'
-      uses: 'actions/checkout@v3'
+      uses: 'actions/checkout@v4'
     - id: 'step-1'
       name: 'Execute script'
       run: 'rm ''.github/workflows/build.yaml'' && ''.github/workflows/build.main.kts'''
@@ -38,7 +38,7 @@ jobs:
     steps:
     - id: 'step-0'
       name: 'Checkout'
-      uses: 'actions/checkout@v3'
+      uses: 'actions/checkout@v4'
     - id: 'step-1'
       run: 'echo "compat=$(jq -c . < .github/compatibility-test-matrix.json)" >> $GITHUB_OUTPUT'
   compatibility-test:
@@ -57,7 +57,7 @@ jobs:
     steps:
     - id: 'step-0'
       name: 'Checkout'
-      uses: 'actions/checkout@v3'
+      uses: 'actions/checkout@v4'
     - id: 'step-1'
       name: 'Set up JDK'
       uses: 'actions/setup-java@v3'
@@ -85,7 +85,7 @@ jobs:
     steps:
     - id: 'step-0'
       name: 'Checkout'
-      uses: 'actions/checkout@v3'
+      uses: 'actions/checkout@v4'
     - id: 'step-1'
       name: 'Set up JDK'
       uses: 'actions/setup-java@v3'

.github/workflows/codeql.yml

@@ -46,7 +46,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL

.github/workflows/gradle-wrapper-validation.yaml

@@ -19,7 +19,7 @@ jobs:
     steps:
     - id: 'step-0'
       name: 'Check out'
-      uses: 'actions/checkout@v3'
+      uses: 'actions/checkout@v4'
     - id: 'step-1'
       name: 'Execute script'
       run: 'rm ''.github/workflows/gradle-wrapper-validation.yaml'' && ''.github/workflows/gradle-wrapper-validation.main.kts'''
@@ -32,7 +32,7 @@ jobs:
     - 'check_yaml_consistency'
     steps:
     - id: 'step-0'
-      uses: 'actions/checkout@v3'
+      uses: 'actions/checkout@v4'
     - id: 'step-1'
       name: 'Validate wrapper'
       uses: 'gradle/wrapper-validation-action@v1'