DBAL-1224: [GH-851] Change MySQL defaults from broken utf8 to fixed utf8mb4

[doctrinebot]

Jira issue originally created by user @doctrinebot:

This issue is created automatically through a Github pull request on behalf of DHager:

Url: #851

Message:

This is a conservative echo of #317 .

Essentially MySQL's uft8 character set is broken and does not support full UTF-8, and a better alternative, utf8mb4 has existed for about five years now. Insofar as Doctrine has a MySQL default configuration, utf8mb4 is a better choice.

[doctrinebot]

Comment created by @doctrinebot:

A related Github Pull-Request [GH-851] was closed:
#851

[doctrinebot]

Comment created by @doctrinebot:

A related Github Pull-Request [GH-851] was reopened:
#851

[github-actions]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.