[EXPORTER] OTLP HTTP exporter reads unbounded response

[marcalff]

Fixes #3958

Changes

Please provide a brief description of the changes here.

• Implemented max size limits in the CURL HTTP code
• Restrict the amount of memory consumed when parsing HTTP responses.

For significant contributions please make sure you have completed the following items:

• CHANGELOG.md updated for non-trivial changes
• Unit tests have been added
• Changes in public API reviewed

[codecov]

Codecov Report

❌ Patch coverage is 47.05882% with 18 lines in your changes missing coverage. Please review.
✅ Project coverage is 81.94%. Comparing base (f0c7212) to head (e4bd460).

Files with missing lines	Patch %	Lines
ext/src/http/client/curl/http_operation_curl.cc	47.06%	18 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4078      +/-   ##
==========================================
- Coverage   82.02%   81.94%   -0.07%     
==========================================
  Files         385      385              
  Lines       16007    16034      +27     
==========================================
+ Hits        13128    13138      +10     
- Misses       2879     2896      +17     

Files with missing lines	Coverage Δ
...lemetry/ext/http/client/curl/http_operation_curl.h	90.91% <ø> (ø)
ext/src/http/client/curl/http_operation_curl.cc	58.75% <47.06%> (-0.70%)	⬇️

... and 1 file with indirect coverage changes

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[dbarker]

Thanks for the fix. Please see questions below.