Bump mysql:mysql-connector-java from 8.0.15 to 8.0.28

Bumps [mysql:mysql-connector-java](https://github.com/mysql/mysql-connector-j) from 8.0.15 to 8.0.28.
- [Changelog](https://github.com/mysql/mysql-connector-j/blob/release/9.x/CHANGES)
- [Commits](mysql/mysql-connector-j@8.0.15...8.0.28)

---
updated-dependencies:
- dependency-name: mysql:mysql-connector-java
  dependency-type: direct:production
...

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

Author: dependabot[bot]

pom.xml

@@ -206,7 +206,7 @@
             <dependency>
                 <groupId>mysql</groupId>
                 <artifactId>mysql-connector-java</artifactId>
-                <version>8.0.15</version>
+                <version>8.0.28</version>
             </dependency>
             <dependency>
                 <groupId>com.google.code.gson</groupId>