fix(ci): install @changesets/changelog-github

[masnwilliams]

Summary

The Release workflow has been failing on main with:

```
🦋 error Error: Cannot find module '@changesets/changelog-github'
```

.changeset/config.json references the GitHub changelog formatter, but the package was never added as a dependency, so changeset version can't load it.

Adds @changesets/changelog-github@0.7.0 to root devDependencies and refreshes bun.lock. Once this lands, the Release workflow will succeed and open the "Version Packages" PR for 0.3.0.

Test plan

• bun install --frozen-lockfile resolves cleanly
• Release workflow opens the version PR after merge

---

Note

Low Risk
Low risk: this only updates devDependencies/lockfile to satisfy the Changesets config and should only affect release/versioning tooling.

Overview
Fixes the release/versioning workflow by adding the missing @changesets/changelog-github@0.7.0 dev dependency referenced in .changeset/config.json.

Updates bun.lock to include the new package and its transitive dependencies so changeset version can run successfully in CI.

^{Reviewed by Cursor Bugbot for commit bce0036. Bugbot is set up for automated code reviews on this repo. Configure here.}

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Project	Deployment	Actions	Updated (UTC)
managed-auth-react-demo	Ready	Preview, Comment	May 15, 2026 7:58pm

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