feat(logs): Add support for dict args

[AbhiPrasad]

resolves #4477

This PR adds support for dict log arguments and adds (cursor generated) tests accordingly.

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 80.64%. Comparing base (0e21fa2) to head (d4714bb).
Report is 1 commits behind head on master.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
sentry_sdk/integrations/logging.py	66.66%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4478      +/-   ##
==========================================
+ Coverage   80.59%   80.64%   +0.04%     
==========================================
  Files         142      142              
  Lines       16030    16033       +3     
  Branches     2745     2747       +2     
==========================================
+ Hits        12920    12930      +10     
+ Misses       2243     2236       -7     
  Partials      867      867              

Files with missing lines	Coverage Δ
sentry_sdk/integrations/logging.py	83.97% <66.66%> (+0.31%)	⬆️

... and 2 files with indirect coverage changes

[sentrivana]

lgtm!