fix(logs): skip malformed utf-8 messages

[solnic]

Fixes #2773

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.18%. Comparing base (6049bfd) to head (f92be4c).
⚠️ Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2777      +/-   ##
==========================================
+ Coverage   90.17%   90.18%   +0.01%     
==========================================
  Files         132      132              
  Lines        5281     5287       +6     
==========================================
+ Hits         4762     4768       +6     
  Misses        519      519              

Components	Coverage Δ
sentry-ruby	97.25% <100.00%> (+<0.01%)	⬆️
sentry-rails	55.66% <ø> (ø)
sentry-sidekiq	95.05% <ø> (ø)
sentry-resque	94.44% <ø> (ø)
sentry-delayed_job	94.68% <ø> (ø)
sentry-opentelemetry	99.31% <ø> (ø)

Files with missing lines	Coverage Δ
sentry-ruby/lib/sentry/client.rb	99.33% <100.00%> (+0.01%)	⬆️
sentry-ruby/lib/sentry/utils/encoding_helper.rb	100.00% <100.00%> (ø)

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[chaadow]

hi, just wondering where this constant is used?