Replace dependency mysql:mysql-connector-java with com.mysql:mysql-connector-j 8.0.33

Author: renovate[bot]

flink-connectors/flink-connector-jdbc/pom.xml

@@ -132,8 +132,8 @@ under the License.
 
 		<!-- MySQL tests -->
 		<dependency>
-			<groupId>mysql</groupId>
-			<artifactId>mysql-connector-java</artifactId>
+			<groupId>com.mysql</groupId>
+			<artifactId>mysql-connector-j</artifactId>
 			<version>8.0.33</version>
 			<scope>test</scope>
 		</dependency>