build: disable https for apk repositories

[Guerra24]

Squid cache doesn't work otherwise.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 92.37%. Comparing base (5e65dec) to head (0027d80).
⚠️ Report is 324 commits behind head on main.

Files with missing lines	Patch %	Lines
asu/build.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #1553       +/-   ##
===========================================
+ Coverage   80.75%   92.37%   +11.62%     
===========================================
  Files          15       15               
  Lines         977     1430      +453     
===========================================
+ Hits          789     1321      +532     
+ Misses        188      109       -79     

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