use jdk 11

Author: nbauma109

pom.xml

@@ -48,8 +48,8 @@
   </developers>
 
   <properties>
-    <maven.compiler.target>1.8</maven.compiler.target>
-    <maven.compiler.source>1.8</maven.compiler.source>
+    <maven.compiler.target>11</maven.compiler.target>
+    <maven.compiler.source>11</maven.compiler.source>
     <maven.javadoc.failOnError>false</maven.javadoc.failOnError>
 
     <version.commons-text>1.9</version.commons-text>