ci: update checkout action to v6 in CI workflows

Author: eloi010

.github/workflows/ci.yml

@@ -42,8 +42,8 @@ jobs:
     outputs:
       publish-version: ${{ steps.project-version.outputs.publish-version }}      
     steps:
-      - name: Checkout
-        uses: actions/checkout@v4
+      - name: Checkout code
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
           fetch-tags: true
@@ -80,8 +80,8 @@ jobs:
       architecture: amd64
       GRADLE_OPTS: -Dorg.gradle.daemon=false -Dorg.gradle.parallel=true -Dorg.gradle.workers.max=2
     steps:
-      - name: Checkout
-        uses: actions/checkout@v4
+      - name: Checkout code
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
           fetch-tags: true
@@ -120,8 +120,8 @@ jobs:
       id-token: write
       packages: write    
     steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
+      - name: Checkout code
+        uses: actions/checkout@v6
 
       - name: Setup Java and Gradle
         id: setup-java-gradle
@@ -157,8 +157,8 @@ jobs:
       security-events: write  # required for Trivy SARIF upload
     environment: docker
     steps:
-      - name: Checkout
-        uses: actions/checkout@v4
+      - name: Checkout code
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
           fetch-tags: true
@@ -241,8 +241,8 @@ jobs:
       contents: read
     environment: docker
     steps:
-      - name: Checkout
-        uses: actions/checkout@v4
+      - name: Checkout code
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
           fetch-tags: true

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

@@ -10,5 +10,6 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@v4
+      - name: Checkout code
+        uses: actions/checkout@v6
       - uses: gradle/wrapper-validation-action@v1