ci: add extract old and new versions extraction step for the Release PR

[apolikamixitos]

What:

• add extract old and new versions extraction step for the Release PR to have better visibility on the release that is about to be published:

Example:

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.67%. Comparing base (c58ed5e) to head (c9f1ae8).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #288   +/-   ##
=======================================
  Coverage   97.67%   97.67%           
=======================================
  Files          19       19           
  Lines         601      602    +1     
  Branches      126      126           
=======================================
+ Hits          587      588    +1     
  Misses          5        5           
  Partials        9        9           

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