Upgrade to actions/checkout v4

Author: carlosame

.github/workflows/build.yml

@@ -19,7 +19,7 @@ jobs:
     name: Java build
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       # Set JDK
       - name: Set up JDK

.github/workflows/publish-package.yml

@@ -16,7 +16,7 @@ jobs:
       packages: write
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up JDK 17
       uses: actions/setup-java@v4
       with: