chore(deps): bump mybatis from 3.5.11 to 3.5.12

Bumps [mybatis](https://github.com/mybatis/mybatis-3) from 3.5.11 to 3.5.12.
- [Release notes](https://github.com/mybatis/mybatis-3/releases)
- [Commits](https://github.com/mybatis/mybatis-3/compare/mybatis-3.5.11...mybatis-3.5.12)

---
updated-dependencies:
- dependency-name: org.mybatis:mybatis
  dependency-type: direct:production
  update-type: version-update:semver-patch
...
Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -73,7 +73,7 @@
         <dynamic-datasource.version>3.5.0</dynamic-datasource.version>
         <pagehelper.version>5.3.2</pagehelper.version>
         <!-- mybatis related -->
-        <mybatis.version>3.5.11</mybatis.version>
+        <mybatis.version>3.5.12</mybatis.version>
         <mybatis.starter.version>2.3.0</mybatis.starter.version>
         <mybatis-plus.version>3.5.3.1</mybatis-plus.version>