Disable the ExistentialAny feature on all the repos for 5.8

[czechboy0]

Disable the ExistentialAny feature on all the repos temporarily.

See #119 for details, we just need to disable the enforcement temporarily.

[czechboy0]

We were able to only disable the feature for Swift 5.8, but keep it enabled on Swift 5.9+, so once we require 5.9, we can remove the conditional logic.

[czechboy0]

Ok this is done, we now only enable the feature enforcement on 5.9+.