update changelog

Author: codeshaunted

.changelog/1775189986.md

@@ -3,12 +3,13 @@ applies_to:
 - aws-sdk-rust
 authors:
 - codeshaunted
-references: []
+references:
+- smithy-rs#4590
 breaking: false
 new_feature: true
 bug_fix: false
 ---
 
 Adds a public `ProvideProcess` trait and `Process` shim to `aws_types::os_shim_internal`, following the same pattern as `ProvideEnv`/`Env` and `ProvideFs`/`Fs`. This enables custom implementations of process execution for `credential_process`, allowing users to provide custom backends (e.g., sandboxed environments, remote execution, WASM) and enabling tests to mock process execution without spawning real subprocesses.
 
-Also updates `ProviderConfig` and `ConfigLoader` in `aws_config` to accept a `Process`, and updates `CredentialProcessProvider` to use the `Process` abstraction. The default tokio-based process provider is behind the new `default-process` feature (enabled by default), mirroring the `default-https-client` pattern. Users can disable it and provide their own `Process` implementation.
+Also updates `ProviderConfig` and `ConfigLoader` in `aws_config` to accept a `Process`, and updates `CredentialProcessProvider` to use the `Process` abstraction. The default tokio-based process provider uses `tokio::process`, pulled in via the existing `credentials-process` feature. Users can provide their own `Process` implementation via `ConfigLoader::process()` or `ProviderConfig::with_process()`.