Bump mysql-connector-java from 5.1.43 to 8.0.28 in /springboot-html#31

dependabot[bot] wants to merge 1 commit intomaster2010yhh/springBoot-demos:masterfrom

dependabot/maven/springboot-html/mysql-mysql-connector-java-8.0.282010yhh/springBoot-demos:dependabot/maven/springboot-html/mysql-mysql-connector-java-8.0.28Copy head branch name to clipboard