Make this Java 17

Author: cstamas

.github/workflows/maven.yml

@@ -23,6 +23,8 @@ jobs:
   build:
     name: Build it
     uses: codehaus-plexus/.github/.github/workflows/maven.yml@master
+    with:
+      jdk-matrix: '[ "23", "21", "17" ]'
 
   deploy:
     name: Deploy

pom.xml

@@ -31,6 +31,7 @@
   </distributionManagement>
 
   <properties>
+    <javaVersion>17</javaVersion>
     <project.build.outputTimestamp>2023-10-21T21:30:57Z</project.build.outputTimestamp>
   </properties>