Update infection/infection requirement from ^0.14 to ^0.15

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](infection/infection@0.14.0...0.15.0)

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

Author: dependabot-preview[bot]

composer.json

@@ -33,7 +33,7 @@
     "ramsey/uuid": "^3.0"
   },
   "require-dev": {
-    "infection/infection": "^0.14",
+    "infection/infection": "^0.15",
     "orchestra/testbench": "^4.2",
     "phpstan/phpstan": "^0.11",
     "phpunit/phpunit": "^8.4",