composer(deps-dev): Bump phpstan/extension-installer from 1.4.2 to 1.4.3

Bumps [phpstan/extension-installer](https://github.com/phpstan/extension-installer) from 1.4.2 to 1.4.3.
- [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
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

composer.json

@@ -28,7 +28,7 @@
     "ergebnis/phpunit-slow-test-detector": "^2.15.0",
     "fakerphp/faker": "^1.23.1",
     "infection/infection": "~0.27.11",
-    "phpstan/extension-installer": "^1.4.2",
+    "phpstan/extension-installer": "^1.4.3",
     "phpstan/phpstan": "^1.12.1",
     "phpstan/phpstan-deprecation-rules": "^1.2.0",
     "phpstan/phpstan-phpunit": "^1.4.0",