chore(deps): bump mybatis-plus.version from 3.3.0 to 3.4.0

Bumps `mybatis-plus.version` from 3.3.0 to 3.4.0.

Updates `mybatis-plus-boot-starter` from 3.3.0 to 3.4.0
- [Release notes](https://github.com/baomidou/mybatis-plus/releases)
- [Changelog](https://github.com/baomidou/mybatis-plus/blob/3.0/CHANGELOG.md)
- [Commits](baomidou/mybatis-plus@v3.3.0...v3.4.0)

Updates `mybatis-plus-generator` from 3.3.0 to 3.4.0
- [Release notes](https://github.com/baomidou/mybatis-plus/releases)
- [Changelog](https://github.com/baomidou/mybatis-plus/blob/3.0/CHANGELOG.md)
- [Commits](baomidou/mybatis-plus@v3.3.0...v3.4.0)

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

Author: dependabot[bot]

pom.xml

@@ -22,7 +22,7 @@
         <java.version>1.8</java.version>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
-        <mybatis-plus.version>3.3.0</mybatis-plus.version>
+        <mybatis-plus.version>3.4.0</mybatis-plus.version>
         <hutool.version>5.4.2</hutool.version>
         <freemarker.version>2.3.30</freemarker.version>
     </properties>