Bump com.microsoft.graph:microsoft-graph in /grapheventgrid

Bumps [com.microsoft.graph:microsoft-graph](https://github.com/microsoftgraph/msgraph-sdk-java) from 5.80.0 to 6.5.1.
- [Release notes](https://github.com/microsoftgraph/msgraph-sdk-java/releases)
- [Changelog](https://github.com/microsoftgraph/msgraph-sdk-java/blob/dev/CHANGELOG.md)
- [Commits](microsoftgraph/msgraph-sdk-java@v5.80.0...v6.5.1)

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

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

Author: dependabot[bot]

grapheventgrid/build.gradle

@@ -18,7 +18,7 @@ repositories {
 dependencies {
   implementation 'org.springframework.boot:spring-boot-starter-web'
   implementation 'com.azure:azure-identity:1.12.0'
-  implementation 'com.microsoft.graph:microsoft-graph:5.80.0'
+  implementation 'com.microsoft.graph:microsoft-graph:6.5.1'
   testImplementation 'org.springframework.boot:spring-boot-starter-test'
 }