Update symfony/finder requirement

Updates the requirements on [symfony/finder](https://github.com/symfony/finder) to permit the latest version.

Updates `symfony/finder` to 7.2.0
- [Release notes](https://github.com/symfony/finder/releases)
- [Changelog](https://github.com/symfony/finder/blob/7.2/CHANGELOG.md)
- [Commits](symfony/finder@v6.4.0...v7.2.0)

---
updated-dependencies:
- dependency-name: symfony/finder
  dependency-type: direct:production
  dependency-group: production-dependencies
...

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

composer.json

@@ -36,7 +36,7 @@
 
         "simplesamlphp/assert": "^1.2",
         "simplesamlphp/composer-xmlprovider-installer": "~1.0.0",
-        "symfony/finder": "^6.4"
+        "symfony/finder": "^7.2"
     },
     "require-dev": {
         "simplesamlphp/simplesamlphp-test-framework": "^1.7"