chore(*): BREAKING CHANGE, use new repos for cucumber and messages

[otrava7]

🤔 What's changed?

• Migrate cucumber and messages to new repos

⚡️ What's your motivation?

• Addresses Implement unambiguous keywords #509 (comment)
• Related Move messages to stand-alone repo common#2029

🏷️ What kind of change is this?

• 🏦 Refactoring/debt/DX (improvement to code design, tooling, documentation etc. without changing behaviour)

♻️ Anything particular you want feedback on?

📋 Checklist:

• I agree to respect and uphold the Cucumber Community Code of Conduct
• I've changed the behaviour of the code
  • I have added/updated tests to cover my changes.
• My change requires a change to the documentation.
  • I have updated the documentation accordingly.
• Users should know about my change
  • I have added an entry to the "Unreleased" section of the CHANGELOG, linking to this pull request.

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[codecov]

Codecov Report

Merging #515 (66822af) into main (9007f1f) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #515   +/-   ##
=======================================
  Coverage   81.50%   81.50%           
=======================================
  Files          27       27           
  Lines        2282     2282           
=======================================
  Hits         1860     1860           
  Misses        321      321           
  Partials      101      101           

Impacted Files	Coverage Δ
formatters/fmt.go	100.00% <ø> (ø)
internal/formatters/fmt.go	72.72% <ø> (ø)
internal/formatters/fmt_base.go	86.17% <ø> (ø)
internal/formatters/fmt_cucumber.go	84.76% <ø> (ø)
internal/formatters/fmt_events.go	97.09% <ø> (ø)
internal/formatters/fmt_multi.go	91.66% <ø> (ø)
internal/formatters/fmt_pretty.go	81.39% <ø> (ø)
internal/formatters/fmt_progress.go	93.15% <ø> (ø)
internal/formatters/undefined_snippets_gen.go	41.46% <ø> (ø)
internal/models/feature.go	100.00% <ø> (ø)
... and 7 more

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[vearutop]

All good! Since this is a breaking change, let me release v0.12.6 of the current code before we merge this.