Use checkout action v6

Author: robtimus

.github/workflows/build.yml

@@ -29,7 +29,7 @@ jobs:
         java: [11, 17, 21, 25]
       fail-fast: false
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           persist-credentials: false
       - name: Set up JDK ${{matrix.java}}
@@ -44,7 +44,7 @@ jobs:
   min-versions:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           persist-credentials: false
       - name: Set up JDK 11
@@ -61,7 +61,7 @@ jobs:
   site:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           persist-credentials: false
       - name: Set up JDK 11

.github/workflows/dependency-review.yml

@@ -21,7 +21,7 @@ jobs:
   dependency-review:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           persist-credentials: false
       - name: 'Dependency Review'

.github/workflows/release-site.yml

@@ -25,7 +25,7 @@ jobs:
   build-site:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           persist-credentials: false
       - name: Set up JDK 11
@@ -52,7 +52,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: ['build-site']
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           persist-credentials: true
       - uses: actions/download-artifact@v5

.github/workflows/sonarcloud.yml

@@ -28,7 +28,7 @@ jobs:
     runs-on: ubuntu-latest
     concurrency: sonar-${{ github.head_ref || github.ref_name }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           persist-credentials: false
           fetch-depth: 0