docs: Update changelog to 3.0

[presatish]

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PR Checklist

Please check if your PR fulfills the following requirements:

• [x] I am not introducing a breaking change (if you are, flag in conventional commit message with BREAKING CHANGE: describing the break)
• [x] I am not introducing a new dependency (add notes below if you are)
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[codecov-commenter]

Codecov Report

Merging #259 (bae35ba) into main (158cf72) will not change coverage. The diff coverage is n/a.

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@@          Coverage Diff          @@
##            main    #259   +/-   ##
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  Coverage   2.40%   2.40%           
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  Files          8       8           
  Lines        872     872           
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  Hits          21      21           
  Misses       851     851