Bump mysql-connector-java from 5.1.37 to 8.0.16

Bumps [mysql-connector-java](https://github.com/mysql/mysql-connector-j) from 5.1.37 to 8.0.16.
- [Release notes](https://github.com/mysql/mysql-connector-j/releases)
- [Changelog](https://github.com/mysql/mysql-connector-j/blob/release/8.0/CHANGES)
- [Commits](mysql/mysql-connector-j@5.1.37...8.0.16)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

pom.xml

@@ -54,7 +54,7 @@
         <lombok.version>1.18.2</lombok.version>
         <junit.version>3.8.1</junit.version>
         <beanutils.version>1.9.2</beanutils.version>
-        <mysql.version>5.1.37</mysql.version>
+        <mysql.version>8.0.16</mysql.version>
         <protostuff.version>1.3.7</protostuff.version>
         <druid.version>1.0.16</druid.version>
         <concurrentlinkedhashmap.version>1.4.2</concurrentlinkedhashmap.version>