Bump com.mysql:mysql-connector-j from 8.3.0 to 8.4.0

Bumps [com.mysql:mysql-connector-j](https://github.com/mysql/mysql-connector-j) from 8.3.0 to 8.4.0.
- [Changelog](https://github.com/mysql/mysql-connector-j/blob/release/8.x/CHANGES)
- [Commits](mysql/mysql-connector-j@8.3.0...8.4.0)

---
updated-dependencies:
- dependency-name: com.mysql:mysql-connector-j
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

build.gradle

@@ -50,7 +50,7 @@ dependencies {
 
     implementation group: 'org.liquibase', name: 'liquibase-core', version: '3.10.3'
     implementation group: 'net.sf', name: 'dbdeploy', version: '2.11.1'
-    implementation group: 'com.mysql', name: 'mysql-connector-j', version: '8.3.0'
+    implementation group: 'com.mysql', name: 'mysql-connector-j', version: '8.4.0'
     implementation group: 'com.h2database', name: 'h2', version: '1.4.200' // Should match version at GoCD 20.5.0 release, since H2 dont guarantee backward compatiiblity
     implementation group: 'org.postgresql', name: 'postgresql', version: '42.7.3'