Upgrade MariaDb Docker image to 10.8.3

Closes #1282

Author: schauder

spring-data-jdbc/src/test/java/org/springframework/data/jdbc/testing/MariaDBDataSourceConfiguration.java

@@ -46,7 +46,7 @@ protected DataSource createDataSource() {
 
 		if (MARIADB_CONTAINER == null) {
 
-			MariaDBContainer<?> container = new MariaDBContainer<>("mariadb:10.5").withUsername("root").withPassword("")
+			MariaDBContainer<?> container = new MariaDBContainer<>("mariadb:10.8.3").withUsername("root").withPassword("")
 					.withConfigurationOverride("");
 			container.start();
 

spring-data-r2dbc/src/test/java/org/springframework/data/r2dbc/testing/MariaDbTestSupport.java

@@ -117,7 +117,7 @@ private static ExternalDatabase testContainer() {
 		if (testContainerDatabase == null) {
 
 			try {
-				MariaDBContainer container = new MariaDBContainer(MariaDBContainer.IMAGE + ":" + MariaDBContainer.DEFAULT_TAG);
+				MariaDBContainer container = new MariaDBContainer("mariadb:10.8.3");
 				container.start();
 
 				testContainerDatabase = ProvidedDatabase.builder(container) //