[SPARK-55570][SQL][TESTS] Upgrade MariaDB image to 12.2.2

[dongjoon-hyun]

What changes were proposed in this pull request?

This PR aims to upgrade MariaDB image to 12.2.2 for Apache Spark 4.2.0.

Why are the changes needed?

To maintain our JDBC test coverage up-to-date by testing against the latest version of MariaDB 12.2.2 which is a Stable (GA) release of MariaDB Community Server 12.2.

• https://mariadb.com/docs/release-notes/community-server/12.2/12.2.2 (2026-02-12)

Does this PR introduce any user-facing change?

No.

How was this patch tested?

Pass the CIs.

Was this patch authored or co-authored using generative AI tooling?

Generated-by: Gemini 3 Pro (High) on Antigravity

[dongjoon-hyun]

I'm checking the failure.

[info] *** 1 SUITE ABORTED ***
[error] Error during tests:
[error] 	org.apache.spark.sql.jdbc.MariaDBKrbIntegrationSuite
[error] (docker-integration-tests / Test / test) sbt.TestsFailedException: Tests unsuccessful

2026-02-17 21:07:53+00:00 [Warn] [Entrypoint]: /usr/local/bin/docker-entrypoint.sh: ignoring /docker-entrypoint-initdb.d/mariadb.keytab
2026-02-17 21:07:53+00:00 [Note] [Entrypoint]: Stopping temporary server

[dongjoon-hyun]

This PR is ready back and passed all tests.

[dongjoon-hyun]

Thank you, @peter-toth . Merged to master.