chore(deps-dev): Bump rollup from 4.20.0 to 4.21.0 (#3421)

Bumps [rollup](https://github.com/rollup/rollup) from 4.20.0 to 4.21.0.
- [Release notes](https://github.com/rollup/rollup/releases)
- [Changelog](https://github.com/rollup/rollup/blob/master/CHANGELOG.md)
- [Commits](rollup/rollup@v4.20.0...v4.21.0)

---
updated-dependencies:
- dependency-name: rollup
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -74,7 +74,7 @@
     "marked-man": "^2.1.0",
     "node-fetch": "^3.3.2",
     "recheck": "^4.4.5",
-    "rollup": "^4.20.0",
+    "rollup": "^4.21.0",
     "semantic-release": "^24.0.0",
     "titleize": "^4.0.0",
     "ts-expect": "^1.3.0",