feat: MySQL, MariaDB always store timestamps in UTC

[kagkarlsson]

Update:
Breaking change for MySQL and MariaDB users later reverted in #481

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• BREAKING CHANGE: Since MySQL and MariaDB does not have a datatype for storing timestamps with time zones, start defaulting to storing them in UTC to avoid issues with DST
• BREAKING CHANGE: Change Oracle schema to use a datatype that supports time zones
• New config-option to override default timestamp persistence behavior for PostgreSQL and Oracle to UTC
• mysql-jdbc v12.4.2.jre8
• mariadb-java-client v3.3.2
• testcontainers v1.19.7

[kagkarlsson]

🎉 This issue has been resolved in v14.0.0 (Release Notes)

[rydenius]

As it is not mentioned in PR description, was it intentional that there was also an API breaking change for PostgreSQL, with the zero argument constructor of PostgreSqlJdbcCustomization removed?

[kagkarlsson]

Not intentional no, more of a slip. Sometimes difficult to remember everything that should make it into a release-note or pr-description