Use mysql:9.2 for DB tests

This updates the PulsarTxnWithDbTxnTestsBase to use mysql:9.2 rather than
mysql:latest which is now mysql:9.3 and has removed a property that is still
used by Testcontainers v1.20.6.

Author: onobc

Diff for: spring-pulsar/src/test/java/org/springframework/pulsar/transaction/PulsarTxnWithDbTxnTestsBase.java

@@ -54,7 +54,7 @@ class PulsarTxnWithDbTxnTestsBase extends PulsarTxnTestsBase {
 
 	private static final Logger LOG = LoggerFactory.getLogger(PulsarTxnWithDbTxnTestsBase.class);
 
-	static MySQLContainer<?> MYSQL_CONTAINER = new MySQLContainer<>(DockerImageName.parse("mysql:latest"))
+	static MySQLContainer<?> MYSQL_CONTAINER = new MySQLContainer<>(DockerImageName.parse("mysql:9.2"))
 		.withInitScript("transaction/init.sql")
 		.withLogConsumer(new Slf4jLogConsumer(LOG));