Bump com.microsoft.graph:microsoft-graph from 6.38.0 to 6.39.0

Bumps [com.microsoft.graph:microsoft-graph](https://github.com/microsoftgraph/msgraph-sdk-java) from 6.38.0 to 6.39.0.
- [Release notes](https://github.com/microsoftgraph/msgraph-sdk-java/releases)
- [Changelog](https://github.com/microsoftgraph/msgraph-sdk-java/blob/main/CHANGELOG.md)
- [Commits](microsoftgraph/msgraph-sdk-java@v6.38.0...v6.39.0)

---
updated-dependencies:
- dependency-name: com.microsoft.graph:microsoft-graph
  dependency-version: 6.39.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

app/build.gradle

@@ -23,7 +23,7 @@ dependencies {
     // This dependency is used by the application.
     implementation 'com.google.guava:guava:33.4.8-jre'
     implementation 'com.azure:azure-identity:1.16.1'
-    implementation 'com.microsoft.graph:microsoft-graph:6.38.0'
+    implementation 'com.microsoft.graph:microsoft-graph:6.39.0'
     implementation 'com.microsoft.kiota:microsoft-kiota-http-okHttp:1.8.4'
 }