Supporting numpy 2

[envolution]

Numpy has released 2.0 and this has caused Howdy to fail with the below issue
#928

The report was closed as the reporter found a solution in downgrading their numpy package to 1.26.

If the intention is to support future numpy versions, please close this ticket and reopen 928

[envolution]

this will be supported on the next dlib release as per #928