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 - Add bash checkdepends.

This is a backport of an upstream change.

See:

* https://github.com/alacritty/alacritty/commit/259e7c7a09f343b28ad34254f3880e9c4cf5c5ec
* https://github.com/alacritty/alacritty/issues/5353

Fixes #12858.

BlueZ fails to start on boot, after a forced restart
of the service it works. This is avoided by requiring
udev-postmount in the OpenRC init script.