Update dependency org.mybatis:mybatis to v3.5.12

Author: renovate[bot]

pom.xml

@@ -68,7 +68,7 @@
 
   <properties>
     <!-- Dependencies artifact version -->
-    <mybatis.version>3.5.11</mybatis.version>
+    <mybatis.version>3.5.12</mybatis.version>
     <thymeleaf.version>3.1.1.RELEASE</thymeleaf.version>
 
     <!-- Dependencies plugin version -->