message: `CODEOWNERS`: some runtime crates are shared ownership
  These crates are used by server SDKs too. `CODEOWNERS` currently says
  they are exclusively owned by the AWS Rust SDK team.
  See
diff: /design/ @awslabs/rust-sdk-owners @awslabs/smithy-rs-server
  /gradle.properties @awslabs/rust-sdk-owners @awslabs/smithy-rs-server
  /tools/ @awslabs/rust-sdk-owners @awslabs/smithy-rs-server
  +/rust-runtime/aws-smithy-async/ @awslabs/rust-sdk-owners @awslabs/smithy-rs-server
  +/rust-runtime/aws-smithy-eventstream/ @awslabs/rust-sdk-owners @awslabs/smithy-rs-server
  +/rust-runtime/aws-smithy-http/ @awslabs/rust-sdk-owners @awslabs/smithy-rs-server
  +/rust-runtime/aws-smithy-json/ @awslabs/rust-sdk-owners @awslabs/smithy-rs-server
  +/rust-runtime/aws-smithy-protocol-test/ @awslabs/rust-sdk-owners @awslabs/smithy-rs-server
  +/rust-runtime/aws-smithy-types/ @awslabs/rust-sdk-owners @awslabs/smithy-rs-server
  +/rust-runtime/aws-smithy-types-convert/ @awslabs/rust-sdk-owners @awslabs/smithy-rs-server
  +/rust-runtime/aws-smithy-xml/ @awslabs/rust-sdk-owners @awslabs/smithy-rs-server
  +/rust-runtime/inlineable/ @awslabs/rust-sdk-owners @awslabs/smithy-rs-server
  +/rust-runtime/build.gradle.kts @awslabs/rust-sdk-owners @awslabs/smithy-rs-server
  +/rust-runtime/Cargo.toml @awslabs/rust-sdk-owners @awslabs/smithy-rs-server
  