Changelog for 5.21.0

[sl0thentr0py]

#skip-changelog

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.65%. Comparing base (5b1b558) to head (29d25ae).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2423   +/-   ##
=======================================
  Coverage   98.65%   98.65%           
=======================================
  Files         218      218           
  Lines       14339    14339           
=======================================
  Hits        14146    14146           
  Misses        193      193           

Components	Coverage Δ
sentry-ruby	99.00% <ø> (+<0.01%)	⬆️
sentry-rails	97.34% <ø> (ø)
sentry-sidekiq	97.07% <ø> (ø)
sentry-resque	96.79% <ø> (-0.33%)	⬇️
sentry-delayed_job	98.92% <ø> (ø)
sentry-opentelemetry	100.00% <ø> (ø)

see 2 files with indirect coverage changes

[solnic]

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