fix(deps): update dependency @azure/functions to v4.3.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@azure/functions	4.1.0 -> 4.3.0

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Release Notes

Azure/azure-functions-nodejs-library (@​azure/functions)

### [`v4.3.0`](https://togithub.com/Azure/azure-functions-nodejs-library/releases/tag/v4.3.0) [Compare Source](https://togithub.com/Azure/azure-functions-nodejs-library/compare/v4.2.0...v4.3.0) ##### Added - Preview support for HTTP Streams. Learn more in our [blog post](https://aka.ms/AzFuncNodeHttpStreams) 🎉 ##### Fixed - Fixed error with out-of-sync binding names [https://github.com/Azure/azure-functions-nodejs-library/issues/210](https://togithub.com/Azure/azure-functions-nodejs-library/issues/210) ### [`v4.2.0`](https://togithub.com/Azure/azure-functions-nodejs-library/releases/tag/v4.2.0) [Compare Source](https://togithub.com/Azure/azure-functions-nodejs-library/compare/v4.1.0...v4.2.0) ##### Added - `clone()` method to `HttpRequest` and `HttpResponse` [#​207](https://togithub.com/Azure/azure-functions-nodejs-library/issues/207)

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