Bump mysql-connector-java from 8.0.15 to 8.0.28 in /testing-mysql-server-8#20

dependabot[bot] wants to merge 1 commit intomasterprestodb/testing-mysql-server:masterfrom

dependabot/maven/testing-mysql-server-8/mysql-mysql-connector-java-8.0.28prestodb/testing-mysql-server:dependabot/maven/testing-mysql-server-8/mysql-mysql-connector-java-8.0.28Copy head branch name to clipboard