Prepare azure_identity 0.24.0 for release (#2561)

Author: chlowell

sdk/identity/azure_identity/CHANGELOG.md

@@ -1,6 +1,6 @@
 # Release History
 
-## 0.24.0 (Unreleased)
+## 0.24.0 (2025-05-06)
 
 ### Features Added
 
@@ -13,10 +13,6 @@
 - Removed `ClientAssertionCredential::from_env` and `ClientCertificateCredential::from_env`.
 - Removed `WorkloadIdentityCredential::from_env`. `::new` now reads the same environment variables except for `AZURE_FEDERATED_TOKEN` (the Workload Identity webhook doesn't set that variable). `WorkloadIdentityCredentialOptions` overrides environment variable values.
 
-### Bugs Fixed
-
-### Other Changes
-
 ## 0.23.0 (2025-04-09)
 
 ### Features Added