HHH-13582 Downgrade MySQL Connector/J to 8.0.12 to be consistent with WF18

Author: gbadner

gradle/libraries.gradle

@@ -110,7 +110,7 @@ ext {
             hsqldb:          "org.hsqldb:hsqldb:2.3.2",
             derby:           "org.apache.derby:derby:10.11.1.1",
             postgresql:      'org.postgresql:postgresql:42.2.2',
-            mysql:           'mysql:mysql-connector-java:8.0.17',
+            mysql:           'mysql:mysql-connector-java:8.0.12',
             mariadb:         'org.mariadb.jdbc:mariadb-java-client:2.2.3',
 
             oracle:          'com.oracle.jdbc:ojdbc8:12.2.0.1',

hibernate-spatial/databases/mysql56/matrix.gradle

@@ -4,4 +4,4 @@
  * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
  * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
  */
-jdbcDependency "mysql:mysql-connector-java:8.0.17"
+jdbcDependency "mysql:mysql-connector-java:8.0.12"