Merge pull request #15 from Kuangcp/dependabot/maven/mysql-mysql-connector-java-8.0.28

Bump mysql:mysql-connector-java from 8.0.15 to 8.0.28

Author: Kuangcp

pom.xml

@@ -223,7 +223,7 @@
             <dependency>
                 <groupId>mysql</groupId>
                 <artifactId>mysql-connector-java</artifactId>
-                <version>8.0.15</version>
+                <version>8.0.28</version>
             </dependency>
             <dependency>
                 <groupId>com.google.code.gson</groupId>