chore(deps): bump com.azure:azure-identity from 1.14.2 to 1.15.0 (#308)

Bumps [com.azure:azure-identity](https://github.com/Azure/azure-sdk-for-java) from 1.14.2 to 1.15.0.
- [Release notes](https://github.com/Azure/azure-sdk-for-java/releases)
- [Commits](Azure/azure-sdk-for-java@azure-identity_1.14.2...azure-core_1.15.0)

---
updated-dependencies:
- dependency-name: com.azure:azure-identity
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -83,7 +83,7 @@ testcontainers-junit = { module = "org.testcontainers:junit-jupiter", version.re
 
 # Azure dependencies
 azure-eventgrid = { group = "com.azure", name = "azure-messaging-eventgrid", version = "4.26.0" }
-azure-identity = { group = "com.azure", name = "azure-identity", version = "1.14.2" }
+azure-identity = { group = "com.azure", name = "azure-identity", version = "1.15.0" }
 azure-keyvault = { group = "com.azure", name = "azure-security-keyvault-secrets", version = "4.9.0" }
 azure-resourcemanager = { group = "com.azure.resourcemanager", name = "azure-resourcemanager", version.ref = "azure-rm" }
 azure-resourcemanager-authorization = { group = "com.azure.resourcemanager", name = "azure-resourcemanager-authorization", version.ref = "azure-rm" }