aws-xray-sdk-core devDependencies in dependencies

Unless I'm missing something, the `packages/core/` package has some `dependencies` that should be `devDependencies`. Notably:

```json
{
"name": "aws-xray-sdk-core",
...
"dependencies": {
"@aws-sdk/types": "^3.4.1",
"@types/cls-hooked": "^4.3.3",
},
```

Right now, installing the aws-xray-sdk-core significantly increases the package size due to these dev dependencies and the dependencies they rely on being built into my final package

Inspect the dependency declarations for the packages/core/ package, starting with the package metadata shown in the issue. Identify entries that are only needed during development, move the appropriate ones out of runtime dependencies, and verify that installing aws-xray-sdk-core no longer includes unnecessary packages in the final installation.

Written by the indexing model from the issue text.