Bump urijs from 1.19.1 to 1.19.6 in /lib/api (#151)

Bumps [urijs](https://github.com/medialize/URI.js) from 1.19.1 to 1.19.6.
- [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@v1.19.1...v1.19.6)

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

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