fix: `brew linkapps` is deprecated
fix: `brew linkapps` is deprecated

`brew linkapps` was used by python.  All other formulas that used it should
already be correctly implemented as casks.
Homebrew 1.3.0 no longer creates a symlink for python to the Homebrew version.
In accordance with PEP 394, it symlinks python2/python3 and pip2/pip3.

RogerThiede/dotfiles,RogerThiede/dotfiles,RogerThiede/dotfiles