[Backport 2.x] Prepare changelog for 2.3.0 release (#266)

[Xtansia]

Description

Backport #266

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 16.01%. Comparing base (ece879b) to head (e88feb0).
Report is 4 commits behind head on 2.x.

Additional details and impacted files

@@              Coverage Diff              @@
##              2.x      #268        +/-   ##
=============================================
- Coverage   77.61%    16.01%    -61.61%     
=============================================
  Files         380      9118      +8738     
  Lines       62503   1427544   +1365041     
=============================================
+ Hits        48513    228615    +180102     
- Misses      13990   1198929   +1184939     

Flag	Coverage Δ
integration	30.38% <ø> (-47.24%)	⬇️
unit	11.36% <ø> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.