Skip authorization header when send_default_pii is false

[st0012]

Fixes #1714

[codecov-commenter]

Codecov Report

Merging #1717 (bd9633c) into master (aeb38cf) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1717      +/-   ##
==========================================
+ Coverage   98.42%   98.43%   +0.01%     
==========================================
  Files         140      140              
  Lines        7994     8001       +7     
==========================================
+ Hits         7868     7876       +8     
+ Misses        126      125       -1     

Impacted Files	Coverage Δ
sentry-ruby/lib/sentry/interfaces/request.rb	95.31% <100.00%> (+0.07%)	⬆️
...y/spec/sentry/interfaces/request_interface_spec.rb	99.07% <100.00%> (+0.05%)	⬆️
sentry-ruby/lib/sentry/breadcrumb.rb	96.29% <0.00%> (-3.71%)	⬇️
sentry-ruby/lib/sentry/background_worker.rb	100.00% <0.00%> (+5.40%)	⬆️

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