Bump urijs from 1.19.6 to 1.19.7 in /packages/backendv2

Bumps [urijs](https://github.com/medialize/URI.js) from 1.19.6 to 1.19.7.
- [Release notes](https://github.com/medialize/URI.js/releases)
- [Changelog](https://github.com/medialize/URI.js/blob/gh-pages/CHANGELOG.md)
- [Commits](medialize/URI.js@v1.19.6...v1.19.7)

---
updated-dependencies:
- dependency-name: urijs
  dependency-type: indirect
...

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