Bump geotools.version from 30.1 to 31.0 (#856)

planetiler-core/pom.xml

@@ -16,7 +16,7 @@
   </parent>
 
   <properties>
-    <geotools.version>30.1</geotools.version>
+    <geotools.version>31.0</geotools.version>
     <log4j.version>2.23.1</log4j.version>
     <prometheus.version>0.16.0</prometheus.version>
     <protobuf.version>3.25.3</protobuf.version>