Merge pull request #7430 from TechEmpower/dependabot/maven/frameworks/Java/light-java/mysql-mysql-connector-java-8.0.28

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

frameworks/Java/light-java/pom.xml

@@ -27,7 +27,7 @@
         <version.logback>1.2.3</version.logback>
         <version.undertow>2.2.11.Final</version.undertow>
         <version.hikaricp>3.3.1</version.hikaricp>
-        <version.mysql>8.0.18</version.mysql>
+        <version.mysql>8.0.28</version.mysql>
         <version.postgres>42.3.3</version.postgres>
         <version.dsl-json>1.8.4</version.dsl-json>
         <version.mustache>0.9.6</version.mustache>