To use Python3 on macOS, we need to invoke it as python3.
Created attachment 440969 [details] proposed patch
Note that there are important steps to take when updating ANGLE. See https://trac.webkit.org/wiki/UpdatingANGLE
Committed r284074 (242902@main): <https://commits.webkit.org/242902@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 440969 [details].
<rdar://problem/84176240>