Does not work on Python 3.9.

[alvynabranches]

Describe the bug

Code

import torch
import nemo.collections.asr as nemo_asr

device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
model = nemo_asr.models.EncDecCTCModel.restore_from(
    restore_path="/Users/user/Downloads/ai4b_indicConformer_kok.nemo"
)
model.freeze()
model = model.to(device)

Error

Traceback (most recent call last):
  File "/Users/user/konkani_stt/kok_indic.py", line 2, in <module>
    import nemo.collections.asr as nemo_asr
  File "/Users/user/Library/Python/3.9/lib/python/site-packages/nemo/__init__.py", line 36, in <module>
    from nemo.utils import logging, logging_mode
  File "/Users/user/Library/Python/3.9/lib/python/site-packages/nemo/utils/__init__.py", line 19, in <module>
    from .nemo_logging import Logger as _Logger
  File "/Users/user/Library/Python/3.9/lib/python/site-packages/nemo/utils/nemo_logging.py", line 23, in <module>
    from nemo.constants import NEMO_ENV_VARNAME_REDIRECT_LOGS_TO_STDERR
  File "/Users/user/Library/Python/3.9/lib/python/site-packages/nemo/constants.py", line 24, in <module>
    np.int,
  File "/Users/user/Library/Python/3.9/lib/python/site-packages/numpy/__init__.py", line 394, in __getattr__
    raise AttributeError(__former_attrs__[attr])
AttributeError: module 'numpy' has no attribute 'int'.
`np.int` was a deprecated alias for the builtin `int`. To avoid this error in existing code, use `int` by itself. Doing this will not modify any behavior and is safe. When replacing `np.int`, you may wish to use e.g. `np.int64` or `np.int32` to specify the precision. If you wish to review your current use, check the release note link for additional information.
The aliases was originally deprecated in NumPy 1.20; for more details and guidance see the original release note at:
    https://numpy.org/devdocs/release/1.20.0-notes.html#deprecations

Expected behavior

Code should run

Environment overview (please complete the following information)

GCP VM
No GPU