Update respect/stringifier requirement from ^0.2.0 to ^0.2.0 || ^2.0.0

Updates the requirements on [respect/stringifier](https://github.com/Respect/Stringifier) to permit the latest version.
- [Release notes](https://github.com/Respect/Stringifier/releases)
- [Commits](Respect/Stringifier@0.2.0...2.0.0)

---
updated-dependencies:
- dependency-name: respect/stringifier
  dependency-type: direct:production
...

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

Author: dependabot[bot]

composer.json

@@ -19,7 +19,7 @@
     },
     "require": {
         "php": "^8.1 || ^8.2",
-        "respect/stringifier": "^0.2.0",
+        "respect/stringifier": "^0.2.0 || ^2.0.0",
         "symfony/polyfill-mbstring": "^1.2"
     },
     "require-dev": {