Update from b72 to b73 should be there. Just tested it.
Anything in your client log?
Should be like that when update was found and downloaded.
[2023-03-21 16:06:06.208] [info] starting download for http://update.teamspeak.com/windows/x64/latest/info.json
[2023-03-21 16:06:07.250] [info] starting download for http://update.teamspeak.com/windows/x64/latest/1671465207-1679397420.patch
