Update phpstan/extension-installer requirement from 1.4.2 to 1.4.3 (#182

)

Updates the requirements on [phpstan/extension-installer](https://github.com/phpstan/extension-installer) to permit the latest version.
- [Release notes](https://github.com/phpstan/extension-installer/releases)
- [Commits](phpstan/extension-installer@1.4.2...1.4.3)

---
updated-dependencies:
- dependency-name: phpstan/extension-installer
  dependency-type: direct:development
...

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

composer.json

@@ -35,7 +35,7 @@
         "symfony/routing": "^4.4 || ^5.0 || ^6.0 || ^7.0",
         "facile-it/facile-coding-standard": "1.2.0",
         "phpstan/phpstan": "1.12.0",
-        "phpstan/extension-installer": "1.4.2",
+        "phpstan/extension-installer": "1.4.3",
         "jangregor/phpstan-prophecy": "1.0.2",
         "phpspec/prophecy": "^1.17",
         "rector/rector": "^1.0.3",