Upgrade PostgreSQL docker image to 14.4

Author: DavideD

hibernate-reactive-core/src/test/java/org/hibernate/reactive/containers/PostgreSQLDatabase.java

@@ -82,7 +82,7 @@ class PostgreSQLDatabase implements TestableDatabase {
 	 * TIP: To reuse the same containers across multiple runs, set `testcontainers.reuse.enable=true` in a file located
 	 * at `$HOME/.testcontainers.properties` (create the file if it does not exist).
 	 */
-	public static final PostgreSQLContainer<?> postgresql = new PostgreSQLContainer<>( imageName( "postgres", "14.3" ) )
+	public static final PostgreSQLContainer<?> postgresql = new PostgreSQLContainer<>( imageName( "postgres", "14.4" ) )
 			.withUsername( DatabaseConfiguration.USERNAME )
 			.withPassword( DatabaseConfiguration.PASSWORD )
 			.withDatabaseName( DatabaseConfiguration.DB_NAME )