Replace disabled stderr redirection char ^ with 2>
Replace disabled stderr redirection char ^ with 2>

Since [Fish 3.3.0][1], redirection to standard error with the `^`
character has been disabled by default.

Ref [oh-my-fish/oh-my-fish#585][2]

[1]: https://github.com/fish-shell/fish-shell/blob/master/CHANGELOG.rst#deprecations-and-removed-features-1
[2]: https://github.com/oh-my-fish/oh-my-fish/issues/585

coderstephen/tmux-zen