Update tomasvotruba/unused-public requirement from ^0.1.7 to ^0.1.8 (#565)

Updates the requirements on [tomasvotruba/unused-public](https://github.com/TomasVotruba/unused-public) to permit the latest version.
- [Release notes](https://github.com/TomasVotruba/unused-public/releases)
- [Commits](TomasVotruba/unused-public@0.1.7...0.1.8.72)

---
updated-dependencies:
- dependency-name: tomasvotruba/unused-public
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

composer.json

@@ -21,7 +21,7 @@
 		"phpstan/phpstan-strict-rules": "^1.1",
 		"phpunit/phpunit": "^8.5|^9.5",
 		"symplify/easy-coding-standard": "^11.2",
-		"tomasvotruba/unused-public": "^0.1.7",
+		"tomasvotruba/unused-public": "^0.1.8",
 		"vlucas/phpdotenv": "^5.4"
 	},
 	"conflict": {