build(deps-dev): update phpunit/php-code-coverage requirement (#1979)

Updates the requirements on [phpunit/php-code-coverage](https://github.com/sebastianbergmann/php-code-coverage) to permit the latest version.
- [Release notes](https://github.com/sebastianbergmann/php-code-coverage/releases)
- [Changelog](https://github.com/sebastianbergmann/php-code-coverage/blob/11.0.8/ChangeLog-11.0.md)
- [Commits](sebastianbergmann/php-code-coverage@11.0.7...11.0.8)

---
updated-dependencies:
- dependency-name: phpunit/php-code-coverage
  dependency-type: direct:development
...

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

composer.json

@@ -83,7 +83,7 @@
 		"overtrue/phplint": "9.5.4",
 		"phpstan/phpstan": "1.12.5",
 		"phpunit/phpunit": "11.5.0",
-		"phpunit/php-code-coverage": "11.0.7",
+		"phpunit/php-code-coverage": "11.0.8",
 		"rector/rector": "0.15.13",
 		"squizlabs/php_codesniffer": "3.11.1"
 	}