Make auto-generated release notes nicer

[danielhollas]

Adds a configuration for auto-generated release notes to make them a bit nicer:

1. Exclude PRs from dependabot and pre-commit-ci bot
2. Autogenerate sections based on labels on the PRs. (this requires a bit of extra work to label the PRs, let's see if we like it or not).

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.62%. Comparing base (6dfe6fa) to head (9ac1616).
Report is 15 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #618   +/-   ##
=======================================
  Coverage   83.62%   83.62%           
=======================================
  Files          16       16           
  Lines        3517     3517           
=======================================
  Hits         2941     2941           
  Misses        576      576           

Flag	Coverage Δ
python-3.11	83.62% <ø> (ø)
python-3.9	83.66% <ø> (ø)

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[danielhollas]

I'll merge this to test this with a alpha release. We can iterate or remove this later.

[danielhollas]

Here are the autogenerated release notes 🎉

https://github.com/aiidalab/aiidalab-widgets-base/releases/tag/v2.3.0a0