upgrade CacheControl to use the more memory-efficient SeparateBodyFileCache

[mr-c]

Closes: #598

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 83.03%. Comparing base (63f9062) to head (8b9149f).
Report is 42 commits behind head on main.

Files with missing lines	Patch %	Lines
schema_salad/ref_resolver.py	50.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #857   +/-   ##
=======================================
  Coverage   83.03%   83.03%           
=======================================
  Files          22       22           
  Lines        4834     4834           
  Branches     1310     1310           
=======================================
  Hits         4014     4014           
  Misses        545      545           
  Partials      275      275           

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