Bump aws-smithy-http to 0.63 per request from server team (#4334)

## Motivation and Context
<!--- Why is this change required? What problem does it solve? -->
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Request from @drganjoo 

>Also, in feature/http-1.x could we please bump version of
aws-smithy-http to 0.63.x instead of
[0.62.4](https://github.com/smithy-lang/smithy-rs/blob/feature/http-1.x/rust-runtime/aws-smithy-http/Cargo.toml#L3).
This way on the server side we can keep on relying on 0.62.x to have
http/0.x support for a while. Thanks.

Note: I merged main back into the base `feature/http-1.x` branch as part
of making this change

## Testing
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to -->
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Failing tests are all server related and expected since the server side
of the codebase hasn't done this upgrade yet.

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Author: landonxjames

rust-runtime/Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "aws-smithy-http"
-version = "0.62.4"
+version = "0.63.0"
 authors = [
     "AWS Rust SDK Team <[email protected]>",
     "Russell Cohen <[email protected]>",