feat(ci): use GitHub release notes generation API for changelog

[lukasmalkmus]

We use that for most of our non-Go projects as well.

[codecov[bot]]

Codecov Report

Merging #137 (8fccc00) into main (1614f00) will increase coverage by 1.15%. The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #137      +/-   ##
==========================================
+ Coverage   14.10%   15.25%   +1.15%     
==========================================
  Files          10       10              
  Lines         539      793     +254     
==========================================
+ Hits           76      121      +45     
- Misses        445      654     +209     
  Partials       18       18              

Impacted Files	Coverage Δ
pkg/terminal/io.go	0.00% <0.00%> (ø)
internal/cmd/root/help.go	0.00% <0.00%> (ø)
internal/cmd/root/root.go	0.00% <0.00%> (ø)
pkg/terminal/epipe_other.go	0.00% <0.00%> (ø)
internal/cmd/root/help_topic.go	100.00% <0.00%> (ø)
internal/config/config.go	6.14% <0.00%> (+0.87%)	:arrow_up:
pkg/terminal/color.go	5.26% <0.00%> (+1.00%)	:arrow_up:
cmd/axiom/main.go	19.10% <0.00%> (+1.06%)	:arrow_up:
pkg/doc/doc.go	76.19% <0.00%> (+1.19%)	:arrow_up:
pkg/terminal/table_printer.go	49.41% <0.00%> (+2.24%)	:arrow_up:

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