chore(deps): upgrade isomorphic-unfetch dependency to ^4.0.0

[AllanZhengYP]

Also remove the runtime dependency of @types/node-fetch because the new isomorphic-unfetch fixed the missing types and do not introduce the @types/node dependency. This addresses #11736

This change also upgrades transitive dependency of node-fetch to 3.3.2. Confirmed no breaking API changes or platform support change.

Checklist

• PR description included
• yarn test passes
• Tests are changed or added
• Relevant documentation is changed or added (and PR referenced)

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[AllanZhengYP]

The build failed: https://github.com/aws-amplify/amplify-js/actions/runs/5811778967/job/15755750335?pr=11762. It looks like bumping up the node-fetch dependency will indeed break the customers. For some reason, new node-fetch starts to be included in the browser build artifact.

[codecov-commenter]

Codecov Report

Merging #11762 (017f3f0) into main (57127c5) will not change coverage.
Report is 3 commits behind head on main.
The diff coverage is n/a.

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[bogdanailincaipnt]

Hello, I appreciate the work. I think "tslib", "react-native-url-polyfill" should also be moved to devDependencies.

[AllanZhengYP]

Hello, I appreciate the work. I think "tslib", "react-native-url-polyfill" should also be moved to devDependencies.

Hi @bogdanailincaipnt The tslib should always be a runtime dependency because it's required by TS generated code at runtime. We added "react-native-url-polyfill" for backward compatibility, we have decided the remove it in next major version. If you want to know more about our next major improvement, you can refer to the pinned issue: #11113