feat: updating nock library for node 18

[bhardwz]

Changes the Nock library version to be compatible with node 18.

Description

Updated the nock version to 13.3.0,
Updated the testcase cases to be compatible with the latest package.

Motivation and Context

Build of ask-sdk-core was failing for node18, so updated the required package to pass the build.

Testing

Created local npm module of ask-sdk-core. Tested using the unit testcases.

Types of changes

• [ x] Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Docs(Add new document content)
• Translate Docs(Translate document content)

Checklist

• [ x] My code follows the code style of this project
• My change requires a change to the documentation
• I have updated the documentation accordingly
• I have read the README document
• I have added tests to cover my changes
• [ x] All new and existing tests passed
• [ x] My commit message follows Conventional Commit Guideline

License

• [ x] By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.