Replace powershell Invoke-WebRequest by curl.

- Windows runner has cmake 3.28
- It is not detecting properly escaped quotes around x64 arch
- Harcode it to make sure it works

- Lets see if this fixes the windows build

- This will autocancel new workflows if same branch is pushed with new/ammended commits

- This is workaround
- Download and use cmake 3.21 on Windows
- Elleviate these issues with 3.28 on these new windows machines
  - Like not finding ffmpeg

- This will be using x64 machines, but Xcode lets you cross-compile for both archs
- For webrtc/native-sdks we build everything on x64 machines
- I am not sure though if some of these deps installed or whatever except to be on arm64 system
  - Like how OBS build is configured and such and going into this would be waste of time now
- Thus if this doesn't work we will just fix the self hosted machine and thats it

- We now use cmake 3.21 which should fix this

This reverts commit a179e45.