composer(deps-dev): update infection/infection requirement

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@0.26.3...0.27.6)

---
updated-dependencies:
- dependency-name: infection/infection
  dependency-type: direct:development
...

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

composer.json

@@ -19,7 +19,7 @@
         "babdev/pagerfanta-bundle": "^3.8",
         "behat/behat": "^3.12",
         "doctrine/doctrine-bundle": "^2.10",
-        "infection/infection": "^0.26.3",
+        "infection/infection": "^0.27.6",
         "jms/serializer-bundle": "^4.2",
         "lexik/jwt-authentication-bundle": "^2.16",
         "matthiasnoback/symfony-config-test": "^4.3",