Bump normalize-url from 4.5.0 to 4.5.1 in /examples/federation/gateway (ExpediaGroup#1179)

Bumps [normalize-url](https://github.com/sindresorhus/normalize-url) from 4.5.0 to 4.5.1.
- [Release notes](https://github.com/sindresorhus/normalize-url/releases)
- [Commits](https://github.com/sindresorhus/normalize-url/commits)

---
updated-dependencies:
- dependency-name: normalize-url
  dependency-type: indirect
...

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

Author: dependabot[bot]