The only way to do it is to copy and paste the "data" folder from 2.3.4, then put it in 2.3.3. Works like a charm and you might as well just rename it to 2.3.4.
Steps:
1. Download 2.3.4. zip, extract then open, even though it won't work for any Mac users.
2. Click "show package contents" on the dropdown that appears. Go through contents and click on resources. Copy only the "data" folder.
3. Do the same for 2.3.3, which is your current game version. Also go through contents and resources, but only delete the "data" folder.
4. Copy and paste the previous folder from 2.3.4 onto 2.3.3
(This was thanks to
blueeeeeeeee222's mention of how to play the new version/2.3.4).