OP, your bullets appear to match the notes for 1.20.5 released on Mar 9, 2026, not the notes for 1.20.6 released on 3/17 which only has the following fix listed:
Fixed an issue where rules and workflows could not be created.
I did see another thread where a Google rep posted 1.20.6 was a fix related to all of these quota issues, but other users reported no change (confirming the same on my end) and the release notes donโt mention quotas at all.