Bump mysql-connector-java from 8.0.27 to 8.0.28 in /modules/jdbc-test

Bumps [mysql-connector-java](https://github.com/mysql/mysql-connector-j) from 8.0.27 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@8.0.27...8.0.28)

---
updated-dependencies:
- dependency-name: mysql:mysql-connector-java
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

modules/jdbc-test/build.gradle

@@ -16,5 +16,5 @@ dependencies {
 
     api 'org.apache.tomcat:tomcat-jdbc:10.0.16'
     api 'org.vibur:vibur-dbcp:25.0'
-    api 'mysql:mysql-connector-java:8.0.27'
+    api 'mysql:mysql-connector-java:8.0.28'
 }