Bump url-parse from 1.4.7 to 1.5.9 in /functions

Bumps [url-parse](https://github.com/unshiftio/url-parse) from 1.4.7 to 1.5.9.
- [Release notes](https://github.com/unshiftio/url-parse/releases)
- [Commits](unshiftio/url-parse@1.4.7...1.5.9)

---
updated-dependencies:
- dependency-name: url-parse
  dependency-type: direct:production
...

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