Update brianium/paratest requirement from 3.* to 3.* || 4.* (#54)

Updates the requirements on [brianium/paratest](https://github.com/paratestphp/paratest) to permit the latest version.
- [Release notes](https://github.com/paratestphp/paratest/releases)
- [Commits](paratestphp/paratest@3.0.0...4.0.0)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Author: dependabot-preview[bot]

composer.json

@@ -16,7 +16,7 @@
   },
   "require-dev": {
     "phpunit/phpunit": "^7.0|^8.5.5",
-    "brianium/paratest": "3.*"
+    "brianium/paratest": "3.* || 4.*"
   },
   "license": "MIT",
   "authors": [