Bump web3-utils in /tkey-web/tkey-redirect-flow-example

Bumps [web3-utils](https://github.com/ChainSafe/web3.js) from 4.0.7 to 4.2.2.
- [Release notes](https://github.com/ChainSafe/web3.js/releases)
- [Changelog](https://github.com/web3/web3.js/blob/4.x/CHANGELOG.md)
- [Commits](https://github.com/ChainSafe/web3.js/commits/v4.2.2)

---
updated-dependencies:
- dependency-name: web3-utils
  dependency-type: indirect
...

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