build(deps-dev): bump gaxios from 7.1.3 to 7.1.4 in /docs/v3 (#4990)

Bumps [gaxios](https://github.com/googleapis/google-cloud-node-core/tree/HEAD/packages/gaxios) from 7.1.3 to 7.1.4.
- [Release notes](https://github.com/googleapis/google-cloud-node-core/releases)
- [Changelog](https://github.com/googleapis/google-cloud-node-core/blob/main/packages/gaxios/CHANGELOG.md)
- [Commits](https://github.com/googleapis/google-cloud-node-core/commits/gaxios-v7.1.4/packages/gaxios)

---
updated-dependencies:
- dependency-name: gaxios
  dependency-version: 7.1.4
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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