Use ntex error for connect

[fafhrd91]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 82.29665% with 37 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.56%. Comparing base (6c40ade) to head (6dc8307).

Files with missing lines	Patch %	Lines
ntex/src/client/response.rs	73.58%	14 Missing ⚠️
ntex/src/client/h2proto.rs	75.86%	7 Missing ⚠️
ntex/src/client/connector.rs	90.47%	4 Missing ⚠️
ntex/src/client/h1proto.rs	84.61%	4 Missing ⚠️
ntex/src/client/request.rs	87.87%	4 Missing ⚠️
ntex/src/client/pool.rs	50.00%	2 Missing ⚠️
ntex/src/http/error.rs	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #780      +/-   ##
==========================================
+ Coverage   90.52%   90.56%   +0.03%     
==========================================
  Files         239      239              
  Lines       33608    33702      +94     
==========================================
+ Hits        30425    30522      +97     
+ Misses       3183     3180       -3     

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