Merge pull request #1 from yoshioterada/dependabot/maven/mysql-mysql-connector-java-8.0.28

Bump mysql-connector-java from 8.0.21 to 8.0.28

Author: yoshioterada

pom.xml

@@ -45,7 +45,7 @@
         <dependency>
             <groupId>mysql</groupId>
             <artifactId>mysql-connector-java</artifactId>
-            <version>8.0.21</version>
+            <version>8.0.28</version>
         </dependency>
 
         <!-- https://mvnrepository.com/artifact/javax.persistence/javax.persistence-api -->