Update dependency com.mysql:mysql-connector-j to v9 (#199)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

pom.xml

@@ -83,7 +83,7 @@
         <dependency>
             <groupId>com.mysql</groupId>
             <artifactId>mysql-connector-j</artifactId>
-            <version>8.4.0</version>
+            <version>9.3.0</version>
             <scope>compile</scope>
         </dependency>
         <dependency>