Bump mysql from 9.2.0 to 9.3.0 in /tooling/docker

Bumps mysql from 9.2.0 to 9.3.0.

---
updated-dependencies:
- dependency-name: mysql
  dependency-version: 9.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

tooling/docker/mysql.Dockerfile

@@ -1,3 +1,3 @@
 # MySQL
 # See https://hub.docker.com/_/mysql
-FROM docker.io/mysql:9.2.0
+FROM docker.io/mysql:9.3.0