Bump url-parse from 1.5.3 to 1.5.7 in /example/webpack

Bumps [url-parse](https://github.com/unshiftio/url-parse) from 1.5.3 to 1.5.7.
- [Release notes](https://github.com/unshiftio/url-parse/releases)
- [Commits](unshiftio/url-parse@1.5.3...1.5.7)

---
updated-dependencies:
- dependency-name: url-parse
  dependency-type: indirect
...

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

Author: dependabot[bot]