Update MySql connector used in tests

Description

The current MySql connector used in tests does not implement async operations, meaning `DbConnection` and `DbCommand` async methods are indeed delegated to a synchronous implementation. For truly testing MySql with async code, we should upgrade the connector. Newer versions have async implementations.

Environment

None

Assignee

Frédéric Delaporte

Reporter

Frédéric Delaporte

Labels

None

Components

Fix versions

Affects versions

Priority

Minor
Configure