Bump mysql-connector-java from 8.0.21 to 8.0.28

Bumps [mysql-connector-java](https://github.com/mysql/mysql-connector-j) from 8.0.21 to 8.0.28.
- [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@8.0.21...8.0.28)

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

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Author: dependabot[bot]

pom.xml

@@ -837,7 +837,7 @@
 			<dependency>
 				<groupId>mysql</groupId>
 				<artifactId>mysql-connector-java</artifactId>
-				<version>8.0.21</version>
+				<version>8.0.28</version>
 			</dependency>
 
 			<dependency>