Update corpus/coding-standard requirement from ^0.6.0 to ^0.8.0

Updates the requirements on [corpus/coding-standard](https://github.com/CorpusPHP/CodingStandard) to permit the latest version.
- [Release notes](https://github.com/CorpusPHP/CodingStandard/releases)
- [Commits](CorpusPHP/CodingStandard@v0.6.0...v0.8.0)

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

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

composer.json

@@ -14,7 +14,7 @@
 	"require-dev": {
 		"phpunit/phpunit": "~7.5 | ~9.5",
 		"squizlabs/php_codesniffer": "^3.7",
-		"corpus/coding-standard": "^0.6.0",
+		"corpus/coding-standard": "^0.8.0",
 		"friendsofphp/php-cs-fixer": "^2.19"
 	},
 	"autoload": {