Update CI to use mysql 9

Testing dev-image https://git.drupalcode.org/project/drupalci_environments/-/jobs/4116280

better title

Production image pushed using

$ docker run --rm mysql:9
2025-01-23 22:30:59+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 9.2.0-1.el9 started.

See no reason why not? Don't know how to review so leaning on tests which are green.

Updated issue summary. Added details.