Upgrade Maria DB JDBC driver version to 2.7.5.

Closes #1244

Author: schauder

pom.xml

@@ -33,7 +33,7 @@
 		<db2.version>11.5.7.0</db2.version>
 		<h2.version>1.4.200</h2.version>
 		<hsqldb.version>2.6.1</hsqldb.version>
-		<mariadb-java-client.version>2.7.2</mariadb-java-client.version>
+		<mariadb-java-client.version>2.7.5</mariadb-java-client.version>
 		<mssql.version>9.2.1.jre8</mssql.version>
 		<mysql-connector-java.version>8.0.29</mysql-connector-java.version>
 		<postgresql.version>42.3.5</postgresql.version>