ci: switch to releaser-pleaser

[apricote]

Switch to releaser-pleaser for planning new releases. This adds the following new features:

• We can easily cut pre-releases, these are always useful if we want to allow some customers to test features before making an official release or to validate changes made to the release CI workflows.
• We can add our own release notes to each release to better inform customers about the new features we added or about any deprecations.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.33%. Comparing base (d6420c1) to head (210cc91).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #628   +/-   ##
=======================================
  Coverage   77.33%   77.33%           
=======================================
  Files          49       49           
  Lines        3971     3971           
=======================================
  Hits         3071     3071           
  Misses        685      685           
  Partials      215      215           

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🚀 New features to boost your workflow:

• ❄ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.