Switch from asyncio.wait_for to async_timeout to avoid task creation

[bdraco]

No description provided.

[codecov-commenter]

Codecov Report

Merging #387 (2003643) into master (56cf8b5) will decrease coverage by 0.69%.
The diff coverage is 96.00%.

@@            Coverage Diff             @@
##           master     #387      +/-   ##
==========================================
- Coverage   94.51%   93.83%   -0.69%     
==========================================
  Files          12       16       +4     
  Lines        2880     3177     +297     
==========================================
+ Hits         2722     2981     +259     
- Misses        158      196      +38     

Impacted Files	Coverage Δ
flux_led/aioutils.py	80.00% <80.00%> (ø)
flux_led/aiodevice.py	98.95% <100.00%> (+0.01%)	⬆️
flux_led/aioscanner.py	98.92% <100.00%> (ø)
flux_led/scanner.py	80.95% <0.00%> (ø)
flux_led/aio.py	100.00% <0.00%> (ø)

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.