specify java version

Author: pdurbin

pom.xml

@@ -42,6 +42,7 @@
 
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    <jdk.version>17</jdk.version>
     <maven.compiler.source>17</maven.compiler.source>
     <maven.compiler.target>17</maven.compiler.target>
     <pomchecker-maven-plugin.version>1.7.0</pomchecker-maven-plugin.version>