Use cibuildwheel to build aarch64 wheels

[brettlangdon]

Just testing out pypa/cibuildwheel#482 to see if I can get it working.

They mentioned this feature should be released this week.

[codecov-io]

Codecov Report

Merging #1951 (21844ce) into master (1a3a1e2) will increase coverage by 0.04%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1951      +/-   ##
==========================================
+ Coverage   90.92%   90.97%   +0.04%     
==========================================
  Files         555      555              
  Lines       38817    38817              
==========================================
+ Hits        35294    35312      +18     
+ Misses       3523     3505      -18     

Impacted Files	Coverage Δ
tests/profiling/_test_line2def_1.py	0.00% <0.00%> (-50.00%)	⬇️
ddtrace/profiling/__init__.py	63.63% <0.00%> (-36.37%)	⬇️
ddtrace/ext/errors.py	76.92% <0.00%> (-15.39%)	⬇️
ddtrace/utils/__init__.py	76.92% <0.00%> (-15.39%)	⬇️
ddtrace/ext/__init__.py	86.66% <0.00%> (-10.00%)	⬇️
ddtrace/provider.py	83.33% <0.00%> (-8.34%)	⬇️
ddtrace/profiling/collector/memalloc.py	95.23% <0.00%> (-4.77%)	⬇️
ddtrace/pin.py	96.20% <0.00%> (-3.80%)	⬇️
ddtrace/settings/config.py	91.80% <0.00%> (-3.28%)	⬇️
ddtrace/profiling/collector/__init__.py	97.29% <0.00%> (-2.71%)	⬇️
... and 21 more

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[Kyle-Verhoog]

Looks like the cibuildwheels release went out so we can update this PR: https://github.com/joerick/cibuildwheel/releases/tag/v1.8.0

[brettlangdon]

Updated to ~=1.8.0