Bump spring.version from 5.3.11 to 5.3.12

Bumps `spring.version` from 5.3.11 to 5.3.12.

Updates `spring-context` from 5.3.11 to 5.3.12
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](spring-projects/spring-framework@v5.3.11...v5.3.12)

Updates `spring-jdbc` from 5.3.11 to 5.3.12
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](spring-projects/spring-framework@v5.3.11...v5.3.12)

Updates `spring-test` from 5.3.11 to 5.3.12
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](spring-projects/spring-framework@v5.3.11...v5.3.12)

Updates `spring-web` from 5.3.11 to 5.3.12
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](spring-projects/spring-framework@v5.3.11...v5.3.12)

---
updated-dependencies:
- dependency-name: org.springframework:spring-context
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.springframework:spring-jdbc
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.springframework:spring-test
  dependency-type: direct:development
  update-type: version-update:semver-patch
- dependency-name: org.springframework:spring-web
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

pom.xml

@@ -106,7 +106,7 @@
     <osgi.dynamicImport>*</osgi.dynamicImport>
 
     <mybatis.version>3.5.7</mybatis.version>
-    <spring.version>5.3.11</spring.version>
+    <spring.version>5.3.12</spring.version>
     <spring-batch.version>4.3.3</spring-batch.version>
     <module.name>org.mybatis.spring</module.name>