build(deps-dev): update infection/infection requirement from ^0.16.3 || ^0.17.0 to ^0.16.3 || ^0.17.0 || ^0.18

Updates the requirements on [infection/infection](https://github.com/infection/infection) to permit the latest version.
- [Release notes](https://github.com/infection/infection/releases)
- [Changelog](https://github.com/infection/infection/blob/master/CHANGELOG.md)
- [Commits](https://github.com/infection/infection/commits/0.18)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

composer.json

@@ -20,7 +20,7 @@
     "require-dev": {
         "doctrine/coding-standard": "^8.0",
         "ergebnis/composer-normalize": "^2.5",
-        "infection/infection": "^0.16.3 || ^0.17.0",
+        "infection/infection": "^0.16.3 || ^0.17.0 || ^0.18",
         "phpstan/extension-installer": "^1.0",
         "phpstan/phpstan": "^0.12.25",
         "phpstan/phpstan-phpunit": "^0.12.8",