fix: upgrade com.mysql:mysql-connector-j from 8.3.0 to 8.4.0

Snyk has created this PR to upgrade com.mysql:mysql-connector-j from 8.3.0 to 8.4.0.

See this package in maven:
com.mysql:mysql-connector-j

See this project in Snyk:
https://app.snyk.io/org/gustavomcarmo/project/0f1290d3-52fc-4d1e-a698-2ce916e1e6ab?utm_source=github&utm_medium=referral&page=upgrade-pr

pom.xml

@@ -48,7 +48,7 @@
         <dependency>
             <groupId>com.mysql</groupId>
             <artifactId>mysql-connector-j</artifactId>
-            <version>8.3.0</version>
+            <version>8.4.0</version>
         </dependency>
         <dependency>
             <groupId>io.springfox</groupId>