Merge pull request #7429 from TechEmpower/dependabot/maven/frameworks/Java/dropwizard/mysql-mysql-connector-java-8.0.28

Bump mysql-connector-java from 8.0.18 to 8.0.28 in /frameworks/Java/dropwizard

frameworks/Java/dropwizard/pom.xml

@@ -17,7 +17,7 @@
 		<dropwizard.version>1.3.12</dropwizard.version>
 		<javax-activation.version>1.1.1</javax-activation.version>
 		<jaxb.version>2.3.0</jaxb.version>
-		<mysql-connector-java.version>8.0.18</mysql-connector-java.version>
+		<mysql-connector-java.version>8.0.28</mysql-connector-java.version>
 		<mongojack.version>2.9.4</mongojack.version>
 		<postgres-jdbc.version>42.3.3</postgres-jdbc.version>
 		<maven-compiler-plugin.version>3.8.0</maven-compiler-plugin.version>