Bump mariadb-java-client from 2.7.5 to 2.7.6 (#3508)
Bump mariadb-java-client from 2.7.5 to 2.7.6 (#3508)

Bumps [mariadb-java-client](https://github.com/mariadb-corporation/mariadb-connector-j) from 2.7.5 to 2.7.6.
- [Release notes](https://github.com/mariadb-corporation/mariadb-connector-j/releases)
- [Changelog](https://github.com/mariadb-corporation/mariadb-connector-j/blob/2.7.6/CHANGELOG.md)
- [Commits](https://github.com/mariadb-corporation/mariadb-connector-j/compare/2.7.5...2.7.6)
ibissource/iaf,ibissource/iaf,ibissource/iaf,ibissource/iaf,ibissource/iaf