Build(deps): Update rowbot/url requirement from ^3.0 to ^4.0

Updates the requirements on [rowbot/url](https://github.com/TRowbotham/URL-Parser) to permit the latest version.
- [Release notes](https://github.com/TRowbotham/URL-Parser/releases)
- [Changelog](https://github.com/TRowbotham/URL-Parser/blob/master/CHANGELOG.md)
- [Commits](TRowbotham/URL-Parser@3.0.0...4.0.0)

---
updated-dependencies:
- dependency-name: rowbot/url
  dependency-type: direct:production
...

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

Author: dependabot[bot]

composer.json

@@ -10,7 +10,7 @@
 		"psr/http-client": "^1.0",
 		"psr/http-factory": "^1.0",
 		"psr/http-message": "^1.0",
-		"rowbot/url": "^3.0",
+		"rowbot/url": "^4.0",
 		"xantios/mimey": "^2.1",
 		"fivefilters/readability.php": "^3.1"
 	},