chore: update @redocly/cli package version to 1.34.13

[lesyk-lesyk]

What/Why/How?

• Update @redocly/cli package to v1.34.13
• Update contributing info

Reference

N/a

Testing

In separate repository using commit sha.

Screenshots / Video (optional)

N/a

Additional context

N/a

[Copilot]

Pull request overview

This PR updates the GitHub Action to use a newer @redocly/cli version (including updated import paths) and refreshes contributor/release guidance.

Changes:

• Update internal imports from @redocly/cli/lib/cms/... to @redocly/cli/lib/reunite/....
• Bump @redocly/cli dependency and regenerate lockfile / license bundle output.
• Improve docs by linking to CONTRIBUTING.md and updating release instructions.

Reviewed changes

Copilot reviewed 8 out of 12 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/set-commit-statuses.ts	Switch Redocly CLI import paths from cms to reunite.
src/main.ts	Switch command imports to the new reunite path.
src/tests/main.test.ts	Update test mocks/imports to match new CLI paths.
src/tests/fixtures.ts	Update fixture type import path.
fake-api-server/fake-api-server.ts	Update API type import path.
package.json	Update CLI dependency; adjust packaging script; add release script.
package-lock.json	Lockfile updated for the new CLI version and transitive deps.
dist/licenses.txt	Regenerated license bundle content for new transitive deps.
README.md	Add link to contribution guidelines.
CONTRIBUTING.md	Update release flow instructions to reference npm run release.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.