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.

[apricote]

After this is merged and a new PR by releaser-pleaser was opened we can close #890.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 69.23%. Comparing base (5066d3b) to head (3445f6e).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #906   +/-   ##
=======================================
  Coverage   69.23%   69.23%           
=======================================
  Files         244      244           
  Lines       10640    10640           
=======================================
  Hits         7367     7367           
  Misses       2605     2605           
  Partials      668      668           

Flag	Coverage Δ
e2e	42.80% <ø> (ø)
unit	63.48% <ø> (ø)

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