Bump mysql-connector-java from 5.1.46 to 8.0.28 in /integration-tests (#40)

diff --git a/integration-tests/pom.xml b/integration-tests/pom.xml
index 9ff0aa2..8296fe9 100644
--- a/integration-tests/pom.xml
+++ b/integration-tests/pom.xml
@@ -48,7 +48,7 @@
       <dependency>
         <groupId>mysql</groupId>
         <artifactId>mysql-connector-java</artifactId>
-        <version>5.1.46</version>
+        <version>8.0.28</version>
       </dependency>
     </dependencies>
   </dependencyManagement>