chore(deps): bump rxjs in /generators/client/templates/angular
chore(deps): bump rxjs in /generators/client/templates/angular

Bumps [rxjs](https://github.com/reactivex/rxjs) from 7.5.3 to 7.5.4.
- [Release notes](https://github.com/reactivex/rxjs/releases)
- [Changelog](https://github.com/ReactiveX/rxjs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/reactivex/rxjs/compare/7.5.3...7.5.4)

---
updated-dependencies:
- dependency-name: rxjs
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
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