Critical update: Log4J injection bug

To all our users:

We were informed about a potential security issue with Log4J:

Watch the explanation in this YouTube video

Please adjust your Log4J dependency versions accordingly, to avoid any risk. No new Atomikos release needs to be installed since this is isolated to a 3rd party library dependency marked as optional, so it is not pulled in transitively. The API has been stable so it works with the latest secure Log4J versions at the time of publishing.