Bump org.mariadb.jdbc:mariadb-java-client from 3.3.3 to 3.4.0 in /Plan (#3645)

Bumps [org.mariadb.jdbc:mariadb-java-client](https://github.com/mariadb-corporation/mariadb-connector-j) from 3.3.3 to 3.4.0.
- [Release notes](https://github.com/mariadb-corporation/mariadb-connector-j/releases)
- [Changelog](https://github.com/mariadb-corporation/mariadb-connector-j/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mariadb-corporation/mariadb-connector-j/compare/3.3.3...3.4.0)

---
updated-dependencies:
- dependency-name: org.mariadb.jdbc:mariadb-java-client
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Plan/build.gradle

@@ -90,7 +90,7 @@ subprojects {
         jettyVersion = "11.0.21"
         caffeineVersion = "2.9.2"
         mysqlVersion = "8.4.0"
-        mariadbVersion = "3.3.3"
+        mariadbVersion = "3.4.0"
         sqliteVersion = "3.42.0.1"
         adventureVersion = "4.17.0"
         hikariVersion = "5.1.0"