Replace deprecated request deps and use fetch

[laodaniel]

related to https://github.com/weekendesk/tech-management/issues/1480

Scope

We have a number of critical, high and moderate vulnerabilities in weekendesk-gateway-frontoffice that are due to lack of updates in our dependencies.

Solution

All vulnerabilities are coming from request and request-promise-native which are deprecated and unmaintained since 2020.

• We are using the native fetch method (since Node 18, it's supported) instead of request and request-promise-native
• We need to replace nock on all unit tests. It's a way to intercept requests but it's not working with fetch
• Bump this library to a major release

Also this PR introduces some breaking changes:

• I've removed the Nodegate passthrough feature which was an incomplete feature and not used on production.
• It's not possible to do GET or HEAD request with a body as this is not supported by the http protocol

I'm also updating:

• Express.js where there are some breaking changes
• body-parser the only breaking change is Node.js 18 is the minimum supported version

I've updated this repository protection branch rule to use only node 20: