bump java version to 17 (#333)

Signed-off-by: Attila Mészáros <[email protected]>

Author: csviri

pom.xml

@@ -44,7 +44,7 @@
 
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <java.version>11</java.version>
+    <java.version>17</java.version>
     <maven.compiler.source>${java.version}</maven.compiler.source>
     <maven.compiler.target>${java.version}</maven.compiler.target>
     <sonar.organization>java-operator-sdk</sonar.organization>