Bump Maven to 3.9.12

Author: slachiewicz

pom.xml

@@ -65,7 +65,7 @@
   </issueManagement>
 
   <properties>
-    <mavenVersion>3.6.3</mavenVersion>
+    <mavenVersion>3.9.12</mavenVersion>
     <jdependVersion>2.9.1</jdependVersion>
     <scmpublish.content>target/staging/${project.artifactId}</scmpublish.content>
   </properties>