web: bump rollup from 4.20.0 to 4.21.0 in /web (#10969)

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](https://github.com/rollup/rollup/compare/v4.20.0...v4.21.0)

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

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

web/packages/sfe/package.json

@@ -19,7 +19,7 @@
         "@types/jquery": "^3.5.30",
         "lockfile-lint": "^4.14.0",
         "prettier": "^3.3.2",
-        "rollup": "^4.18.1",
+        "rollup": "^4.21.0",
         "rollup-plugin-copy": "^3.5.0",
         "wireit": "^0.14.4"
     },