Bump mysql-connector-java from 5.1.30 to 8.0.16

Bumps [mysql-connector-java](https://github.com/mysql/mysql-connector-j) from 5.1.30 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](https://github.com/mysql/mysql-connector-j/compare/5.1.30...8.0.16

)
Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -67,7 +67,7 @@
             <dependency>
                 <groupId>mysql</groupId>
                 <artifactId>mysql-connector-java</artifactId>
-                <version>5.1.30</version>
+                <version>8.0.16</version>
             </dependency>
             <dependency>
                 <groupId>commons-fileupload</groupId>