bug: old version numpy.float type deprecated for numpy >= 1.24

[KennyNg-19]

Context

• Issues: Moverscore demo code fails to run because numpy.float64 or numpy.float32 types are deprecated for the mainstream numpy version >= 1.24. The error is as below for any numpy version >= 1.24.

• Code to run

refs = ['The dog bit the man.', 'The dog had bit the man.']
sys = 'The dog bit the man.'
mover = sentence_score(sys, refs)
print(mover)

• Exception raised:
  

Changes

Fixes: I replaced all occurrences with python float type as suggested in this answer and tested it with Moverscore -- it works. The numpy new version >= 1.24 should have compatibility for other functions in the older version.