Bump microsoft/microsoft-graph in /app-auth/graphapponlytutorial

Bumps [microsoft/microsoft-graph](https://github.com/microsoftgraph/msgraph-sdk-php) from 2.56.0 to 3.0.0.
- [Release notes](https://github.com/microsoftgraph/msgraph-sdk-php/releases)
- [Changelog](https://github.com/microsoftgraph/msgraph-sdk-php/blob/main/CHANGELOG.md)
- [Commits](microsoftgraph/msgraph-sdk-php@v2.56.0...v3.0.0)

---
updated-dependencies:
- dependency-name: microsoft/microsoft-graph
  dependency-version: 3.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

app-auth/graphapponlytutorial/composer.json

@@ -8,7 +8,7 @@
     },
     "require": {
         "vlucas/phpdotenv": "^5.4",
-        "microsoft/microsoft-graph": "^2.0.0",
+        "microsoft/microsoft-graph": "^3.0.0",
         "php-http/guzzle7-adapter": "^1.0"
     },
     "require-dev": {