Upgrade to actions/checkout v6

Author: carlosame

.github/workflows/build.yml

@@ -20,7 +20,7 @@ jobs:
     name: Validate Gradle wrapper
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: gradle/actions/wrapper-validation@v5
 
   build:
@@ -29,7 +29,7 @@ jobs:
     name: Java build
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       # Set JDK
       - name: Set up JDK

.github/workflows/publish-package.yml

@@ -16,7 +16,7 @@ jobs:
       packages: write
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Set up JDK 17
       uses: actions/setup-java@v5
       with: