chore(deps): bump com.microsoft.graph:microsoft-graph-core

Bumps [com.microsoft.graph:microsoft-graph-core](https://github.com/microsoftgraph/msgraph-sdk-java-core) from 3.1.14 to 3.1.15.
- [Release notes](https://github.com/microsoftgraph/msgraph-sdk-java-core/releases)
- [Changelog](https://github.com/microsoftgraph/msgraph-sdk-java-core/blob/main/CHANGELOG.md)
- [Commits](microsoftgraph/msgraph-sdk-java-core@v3.1.14...v3.1.15)

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

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

gradle/dependencies.gradle

@@ -8,7 +8,7 @@ dependencies {
  implementation 'jakarta.annotation:jakarta.annotation-api:2.1.1'
 
  // Core Http library
- api 'com.microsoft.graph:microsoft-graph-core:3.1.14'
+ api 'com.microsoft.graph:microsoft-graph-core:3.1.15'
 
  implementation 'com.microsoft.kiota:microsoft-kiota-authentication-azure:1.1.14'
  implementation 'com.microsoft.kiota:microsoft-kiota-http-okHttp:1.1.14'