Bump mysql-connector-java from 3.1.14 to 8.0.16

Bumps [mysql-connector-java](https://github.com/mysql/mysql-connector-j) from 3.1.14 to 8.0.16.
- [Release notes](https://github.com/mysql/mysql-connector-j/releases)
- [Changelog](https://github.com/mysql/mysql-connector-j/blob/release/8.0/CHANGES)
- [Commits](https://github.com/mysql/mysql-connector-j/commits/8.0.16)
Signed-off-by: Ndependabot[bot] <support@github.com>

pom.xml

@@ -44,7 +44,7 @@
     <dependency>
       <groupId>mysql</groupId>
       <artifactId>mysql-connector-java</artifactId>
-      <version>3.1.14</version>
+      <version>8.0.16</version>
     </dependency>
 
     <!-- mybatis -->