Depend on latest GeoIP2 library

Author: rafl

pom.xml

@@ -57,7 +57,7 @@
         <dependency>
             <groupId>com.maxmind.geoip2</groupId>
             <artifactId>geoip2</artifactId>
-            <version>2.11.0</version>
+            <version>2.12.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.httpcomponents</groupId>