Update changelog

---

applies_to:

- client

authors:

- aajtodd

references:

- smithy-rs#1925

breaking: false

new_feature: false

bug_fix: false

---

Backport connection poisoning to hyper 1.x support

---

applies_to:

- client

- aws-sdk-rust

authors:

- ysaito1001

references:

- aws-sdk-rust#820

breaking: false

new_feature: false

bug_fix: true

---

Re-export `ByteStream`'s `Length` and `FsBuilder`. By making these types available directly within a client crate, customers can use `ByteStream::read_from` without needing to import them separately from the `aws-smithy-types` crate.

---

applies_to:

- aws-sdk-rust

- client

authors:

- ysaito1001

references:

- aws-sdk-rust#821

- smithy-rs#3797

breaking: false

new_feature: false

bug_fix: true

---

Fix the [Length::UpTo](https://docs.rs/aws-smithy-types/1.2.2/aws_smithy_types/byte_stream/enum.Length.html) usage in [FsBuilder](https://docs.rs/aws-smithy-types/1.2.2/aws_smithy_types/byte_stream/struct.FsBuilder.html), ensuring that the specified length does not exceed the remaining file length.

---

applies_to:

- client

- aws-sdk-rust

authors:

- ysaito1001

references:

- smithy-rs#3798

breaking: false

new_feature: false

bug_fix: true

---

Fix the execution order of [modify_before_serialization](https://docs.rs/aws-smithy-runtime-api/latest/aws_smithy_runtime_api/client/interceptors/trait.Intercept.html#method.modify_before_serialization) and [read_before_serialization](https://docs.rs/aws-smithy-runtime-api/latest/aws_smithy_runtime_api/client/interceptors/trait.Intercept.html#method.read_before_serialization) in the orchestrator. The `modify_before_serialization` method now executes before the `read_before_serialization` method. This adjustment may result in changes in behavior depending on how you customize interceptors.

---

applies_to:

- client

- server

- aws-sdk-rust

authors:

- ysaito1001

references:

- smithy-rs#3800

breaking: true

new_feature: false

bug_fix: false

---

Upgrade MSRV to Rust 1.78.0.