Bump msgraph-sdk from 1.16.0 to 1.18.0 in /app-auth/graphapponlytutorial

Bumps [msgraph-sdk](https://github.com/microsoftgraph/msgraph-sdk-python) from 1.16.0 to 1.18.0.
- [Release notes](https://github.com/microsoftgraph/msgraph-sdk-python/releases)
- [Changelog](https://github.com/microsoftgraph/msgraph-sdk-python/blob/main/CHANGELOG.md)
- [Commits](microsoftgraph/msgraph-sdk-python@v1.16.0...v1.18.0)

---
updated-dependencies:
- dependency-name: msgraph-sdk
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

app-auth/graphapponlytutorial/requirements.txt

@@ -102,7 +102,7 @@ msal-extensions==1.2.0
     # via azure-identity
 msgraph-core==1.0.0
     # via msgraph-sdk
-msgraph-sdk==1.16.0
+msgraph-sdk==1.18.0
     # via -r requirements.in
 multidict==6.0.5
     # via