[SPARK-32211][SQL] Pin mariadb-plugin-gssapi-server version to fix MariaDBKrbIntegrationSuite

### What changes were proposed in this pull request?
`MariaDBKrbIntegrationSuite` fails because the docker image contains MariaDB version `1:10.4.12+maria~bionic` but `1:10.4.13+maria~bionic` came out and `mariadb-plugin-gssapi-server` installation triggered unwanted database upgrade inside the docker image. The main problem is that the docker image scripts are prepared to handle `1:10.4.12+maria~bionic` version and not any future development.

### Why are the changes needed?
Failing test.

### Does this PR introduce _any_ user-facing change?
No.

### How was this patch tested?
Executed `MariaDBKrbIntegrationSuite` manually.

Closes #29025 from gaborgsomogyi/SPARK-32211.

Authored-by: Gabor Somogyi <[email protected]>
Signed-off-by: Dongjoon Hyun <[email protected]>

Author: gaborgsomogyi

external/docker-integration-tests/src/test/resources/mariadb_docker_entrypoint.sh

@@ -18,7 +18,7 @@
 
 dpkg-divert --add /bin/systemctl && ln -sT /bin/true /bin/systemctl
 apt update
-apt install -y mariadb-plugin-gssapi-server
+apt install -y mariadb-plugin-gssapi-server=1:10.4.12+maria~bionic
 echo "gssapi_keytab_path=/docker-entrypoint-initdb.d/mariadb.keytab" >> /etc/mysql/mariadb.conf.d/auth_gssapi.cnf
 echo "gssapi_principal_name=mariadb/[email protected]" >> /etc/mysql/mariadb.conf.d/auth_gssapi.cnf
 docker-entrypoint.sh mysqld