Bump mysql-connector-java from 6.0.6 to 8.0.16

Bumps [mysql-connector-java](https://github.com/mysql/mysql-connector-j) from 6.0.6 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@6.0.6...8.0.16)

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

Author: dependabot[bot]

pom.xml

@@ -16,7 +16,7 @@
         <logback.version>1.2.1</logback.version>
         <emoji-java.version>3.1.3</emoji-java.version>
         <opencsv.version>3.9</opencsv.version>
-        <mysql-connector-java.version>6.0.6</mysql-connector-java.version>
+        <mysql-connector-java.version>8.0.16</mysql-connector-java.version>
         <mssql-jdbc.version>8.4.1.jre8</mssql-jdbc.version>
         <dom4j.version>2.1.3</dom4j.version>
         <spring-security-core.version>5.1.11.RELEASE</spring-security-core.version>