Bump mysql-connector-java from 5.1.42 to 8.0.12
Bump mysql-connector-java from 5.1.42 to 8.0.12

Bumps [mysql-connector-java](https://github.com/mysql/mysql-connector-j) from 5.1.42 to 8.0.12.
- [Release notes](https://github.com/mysql/mysql-connector-j/releases)
- [Changelog](https://github.com/mysql/mysql-connector-j/blob/release/5.1/CHANGES)
- [Commits](https://github.com/mysql/mysql-connector-j/compare/5.1.42...8.0.12)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
vorburger/MariaDB4j,vorburger/MariaDB4j