thefuck: migrate to [email protected]

[fxcoudert]

As part of the Python 3.9 migration (#62201).

This formula is independent from the all other Python formulas (if I didn't screw up my script or my logic)

Do not merge before the next Brew tag ships, expected on Monday 2020-10-12

[fxcoudert]

Test failure on 10.15:

==> /usr/local/Cellar/thefuck/3.30_1/bin/thefuck git branchh
No fucks given

Error: thefuck: failed
An exception occurred within a child process:
  Test::Unit::AssertionFailedError: <0> expected but was
<1>.

[Moisan]

I cannot reproduce the test failure locally on 10.15, even when installing from the built bottle.

[BrewTestBot]

@fxcoudert has triggered a merge.

[BrewTestBot]

⚠️ @fxcoudert bottle publish failed.

[BrewTestBot]

@fxcoudert has triggered a merge.