Bump mybatis-spring-boot-starter from 2.1.1 to 2.1.2

Bumps [mybatis-spring-boot-starter](https://github.com/mybatis/spring-boot-starter) from 2.1.1 to 2.1.2.
- [Release notes](https://github.com/mybatis/spring-boot-starter/releases)
- [Commits](https://github.com/mybatis/spring-boot-starter/compare/mybatis-spring-boot-2.1.1...mybatis-spring-boot-2.1.2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

build.gradle

@@ -22,7 +22,7 @@ ext {
     libraries = [
         mybatisVersion = '3.5.4',
         mybatisSpringVersion = '2.0.3',
-        mybatisSpringBootStarterVersion = '2.1.1',
+        mybatisSpringBootStarterVersion = '2.1.2',
         springVersion = '5.2.4.RELEASE',
         springBootVersion = '2.2.5.RELEASE',
         jsqlparserVersion = '3.1',