feat: improve dns cache performance

[bdraco]

No description provided.

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (963d022) 99.81% compared to head (4b9e3ed) 99.81%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1172   +/-   ##
=======================================
  Coverage   99.81%   99.81%           
=======================================
  Files          22       22           
  Lines        2673     2676    +3     
  Branches      465      466    +1     
=======================================
+ Hits         2668     2671    +3     
  Misses          3        3           
  Partials        2        2           

Impacted Files	Coverage Δ
src/zeroconf/__init__.py	100.00% <100.00%> (ø)
src/zeroconf/_cache.py	100.00% <100.00%> (ø)

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[bdraco]

strange that making async_all_by_details a cpdef causes a seg fault