Merge smithy-rs-release-1.x.y into main (#4066)

Merge it with `gh pr merge --admin --merge` or manually merge it with
the merge commit (not squash merge).

Co-authored-by: Landon James <lnj@amazon.com>

Author: aws-sdk-rust-ci

aws/sdk/integration-tests/telemetry/tests/spans.rs

@@ -224,7 +224,11 @@ async fn config_spans_emitted() {
     build_profile_token_provider.assert();
 }
 
+// NOTE: this test is being temporarily ignored since, although it succeeds both locally and in the
+// GitHub CI, it fails in our CodeBuild CI, likely because CodeBuild runs on EC2 so IMDS is present
+// and causes different behavior.
 #[tokio::test]
+#[ignore]
 async fn region_spans_emitted() {
     let assertion_registry = AssertionRegistry::default();
     let base_subscriber = tracing_subscriber::Registry::default();