Bump ws from 7.1.2 to 7.4.6 in /samples/browser (#458)

Bumps [ws](https://github.com/websockets/ws) from 7.1.2 to 7.4.6.
- [Release notes](https://github.com/websockets/ws/releases)
- [Commits](websockets/ws@7.1.2...7.4.6)

Signed-off-by: dependabot[bot] <[email protected]>

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

Author: dependabot[bot]