Update MySQL and PostgreSQL versions in build config (#609)

Updated the MySQL and PostgreSQL versions in the Gradle build configuration. Also changed the MySQL connector's Java group, enhancing the build process compatibility with the latest versions.

Author: zaleslaw

gradle/libs.versions.toml

@@ -31,8 +31,8 @@ fuel = "2.3.1"
 poi = "5.2.5"
 mariadb = "3.3.2"
 h2db = "2.2.224"
-mysql = "8.0.33"
-postgresql = "42.7.1"
+mysql = "8.3.0"
+postgresql = "42.7.2"
 sqlite = "3.45.1.0"
 kotlinDatetime = "0.5.0"
 openapi = "2.1.20"
@@ -74,7 +74,7 @@ fuel = { group = "com.github.kittinunf.fuel", name = "fuel", version.ref = "fuel
 poi = { group = "org.apache.poi", name = "poi", version.ref = "poi" }
 mariadb = { group = "org.mariadb.jdbc", name = "mariadb-java-client", version.ref = "mariadb" }
 h2db = { group = "com.h2database", name = "h2", version.ref = "h2db" }
-mysql = { group = "mysql", name = "mysql-connector-java", version.ref = "mysql" }
+mysql = { group = "com.mysql", name = "mysql-connector-j", version.ref = "mysql" }
 postgresql = { group = "org.postgresql", name = "postgresql", version.ref = "postgresql" }
 sqlite = { group = "org.xerial", name = "sqlite-jdbc", version.ref = "sqlite" }