Bump mysql-connector-java

Bumps [mysql-connector-java](https://github.com/mysql/mysql-connector-j) from 5.1.40 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](https://github.com/mysql/mysql-connector-j/compare/5.1.40...8.0.28)

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

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

spring-cloud-alibaba-examples/appactive-example/storage/pom.xml

@@ -32,7 +32,7 @@
 		<dependency>
 			<groupId>mysql</groupId>
 			<artifactId>mysql-connector-java</artifactId>
-			<version>5.1.40</version>
+			<version>8.0.28</version>
 		</dependency>
 
 		<dependency>