Bump mariadb-java-client from 2.6.2 to 2.7.0 (#6953)
Bump mariadb-java-client from 2.6.2 to 2.7.0 (#6953)

Bumps [mariadb-java-client](https://github.com/mariadb-corporation/mariadb-connector-j) from 2.6.2 to 2.7.0.
- [Release notes](https://github.com/mariadb-corporation/mariadb-connector-j/releases)
- [Changelog](https://github.com/mariadb-corporation/mariadb-connector-j/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mariadb-corporation/mariadb-connector-j/compare/2.6.2...2.7.0)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
JabRef/jabref,sauliusg/jabref,sauliusg/jabref,sauliusg/jabref,JabRef/jabref,sauliusg/jabref,Siedlerchr/jabref,Siedlerchr/jabref,Siedlerchr/jabref,Siedlerchr/jabref,JabRef/jabref,JabRef/jabref