[tlu] new beta

[Adam R. Maxwell]

All,

Please try the latest beta of TLU:

https://github.com/amaxwell/tlutility/releases/download/1.53b5/TeX.Live.Utility.app-1.53b5.zip

This includes its own Python version internally, so it's a much larger download than previously. Don't blame me: I hate it.

After a frantic few hours of fighting with Xcode, github, codesign, and notarization errors, I think this should work, but I've only tested on Mojave and Big Sur.

thanks,
Adam