Upgrade mysql driver to 8.0.23.

Original pull request: #961.

Author: schauder

pom.xml

@@ -37,7 +37,7 @@
 		<hsqldb.version>2.2.8</hsqldb.version>
 		<mariadb-java-client.version>2.6.0</mariadb-java-client.version>
 		<mssql.version>7.0.0.jre8</mssql.version>
-		<mysql-connector-java.version>5.1.41</mysql-connector-java.version>
+		<mysql-connector-java.version>8.0.23</mysql-connector-java.version>
 		<postgresql.version>42.2.19</postgresql.version>
 		<oracle.version>19.6.0.0</oracle.version>
 

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

@@ -21,14 +21,13 @@
 import javax.annotation.PostConstruct;
 import javax.sql.DataSource;
 
+import com.mysql.cj.jdbc.MysqlDataSource;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.Profile;
 import org.springframework.core.io.ByteArrayResource;
 import org.springframework.jdbc.datasource.init.ScriptUtils;
 import org.testcontainers.containers.MySQLContainer;
 
-import com.mysql.jdbc.jdbc2.optional.MysqlDataSource;
-
 /**
  * {@link DataSource} setup for MySQL. Starts a docker container with a MySql database and sets up a database name
  * "test" in it.