change licence to GPL v3.0

Author: makbn

pom.xml

@@ -20,8 +20,8 @@
 
     <licenses>
         <license>
-            <name>BSD 2-Clause License</name>
-            <url>https://opensource.org/licenses/BSD-2-Clause</url>
+            <name>GNU General Public License, Version 3.0</name>
+            <url>https://www.gnu.org/licenses/gpl-3.0.html</url>
             <distribution>repo</distribution>
         </license>
     </licenses>