bindings-go : update Makefile to use cmake (#2952)

bindings-go : update Makefile to use cmake (#2952)

This commit updates the Makefile to use cmake instead of make to build
whisper.cpp.

The motivation for this change is that currently the make recipe test
will fail with the following error:
```console
$ make test
Mkdir build
Mkdir models
Build whisper
make[1]: Entering directory '/home/danbev/work/ai/whisper-work'
make[1]: *** No rule to make target 'libwhisper.a'.  Stop.
make[1]: Leaving directory '/home/danbev/work/ai/whisper-work'
make: *** [Makefile:33: whisper] Error 2
```