update mysql connector version to remove open vulnerability

Signed-off-by: Harshit Gangal <harshit@planetscale.com>

Author: harshit-gangal

java/example/pom.xml

@@ -32,7 +32,7 @@
     <dependency>
       <groupId>mysql</groupId>
       <artifactId>mysql-connector-java</artifactId>
-      <version>8.0.28</version>
+      <version>8.0.33</version>
       <optional>false</optional>
     </dependency>