Revert "Upgrade to MariaDB 1.3.0"

This reverts commit 088c58b80a.

See gh-4482

spring-boot-dependencies/pom.xml

@@ -113,7 +113,7 @@
 		<log4j.version>1.2.17</log4j.version>
 		<log4j2.version>2.4.1</log4j2.version>
 		<logback.version>1.1.3</logback.version>
-		<mariadb.version>1.3.0</mariadb.version>
+		<mariadb.version>1.2.3</mariadb.version>
 		<mockito.version>1.10.19</mockito.version>
 		<mongodb.version>2.13.2</mongodb.version>
 		<mysql.version>5.1.37</mysql.version>