Build(deps-dev): Bump symfony/filesystem from 4.4.2 to 4.4.3

Bumps [symfony/filesystem](https://github.com/symfony/filesystem) from 4.4.2 to 4.4.3.
- [Release notes](https://github.com/symfony/filesystem/releases)
- [Changelog](https://github.com/symfony/filesystem/blob/master/CHANGELOG.md)
- [Commits](symfony/filesystem@v4.4.2...v4.4.3)

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

composer.json

@@ -37,7 +37,7 @@
     "phpstan/phpstan-strict-rules": "~0.12.2",
     "phpunit/phpunit": "^7.5.20",
     "psalm/plugin-phpunit": "~0.8.1",
-    "symfony/filesystem": "^4.4.1",
+    "symfony/filesystem": "^4.4.3",
     "vimeo/psalm": "^3.8.3"
   },
   "config": {