Upgrading CI/CD pipeline to avoid GitHub Actions warnings

Author: andrus

.github/workflows/maven.yml

@@ -14,10 +14,10 @@ jobs:
 
     steps:
       - name: Checkout...
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Set up JDK...
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@v5
         with:
           java-version: ${{ matrix.java }}
           distribution: 'temurin'
@@ -32,14 +32,14 @@ jobs:
 
     steps:
       - name: Checkout...
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       # this action exports env.POM_VERSION variable
       - name: Export Maven coordinates...
         uses: bootique-tools/export-maven-coordinates-action@v1
 
       - name: Set up JDK...
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@v5
         # skip this for the release versions
         if: contains(env.POM_VERSION, '-SNAPSHOT')
         with: