Log Message:
zsh-autosuggestions: update to 0.5.0.

## v0.5.0
- Don't overwrite config with default values (#335)
- Support fallback strategies by supplying array to suggestion config var
- Rename "default" suggestion strategy to "history" to name \ 
it based on what it actually does
- Reset opts in some functions affected by `GLOB_SUBST` (#334)
- Support widgets starting with dashes (ex: `-a-widget`) (#337)
- Skip async tests in zsh versions less than 5.0.8 because of reliability issues
- Fix handling of newline + carriage return in async pty (#333)