Update corpus/coding-standard requirement || ^0.6.0

Updates the requirements on corpus/coding-standard to permit the latest version.

---
updated-dependencies:
- dependency-name: corpus/coding-standard
  dependency-type: direct:development
...

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

composer.json

@@ -25,6 +25,6 @@
 		"phpunit/phpunit": "~7.5|~9.3",
 		"donatj/drop": "^1.0",
 		"squizlabs/php_codesniffer": "^3.5",
-		"corpus/coding-standard": "^0.4.0"
+		"corpus/coding-standard": "^0.4.0 || ^0.6.0"
 	}
 }