Updates.

Author: DariuszDepta

.github/workflows/container.yml

@@ -28,11 +28,11 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v5
 
-      - name: Set up OpenJDK 17
+      - name: Set up OpenJDK 21
         uses: actions/setup-java@v4
         with:
           distribution: oracle
-          java-version: 17
+          java-version: 21
 
       - name: Cache local Maven repository
         uses: actions/cache@v4

pom.xml

@@ -23,7 +23,7 @@
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-    <java.version>17</java.version>
+    <java.version>21</java.version>
   </properties>
 
   <dependencies>