chore: update dependency com.mysql:mysql-connector-j to v9.3.0

Author: renovate[bot]

gradle/libs.versions.toml

@@ -34,7 +34,7 @@ h2 = "1.4.197" # do not update, leads to database incompatibility
 xodus = "2.0.1"
 mongodb = "5.4.0"
 hikariCp = "6.3.0"
-mysqlConnector = "9.2.0"
+mysqlConnector = "9.3.0"
 
 # general
 oshi = "6.8.0"