Fixing the `packaging` dependency creates issues when trying to `pip-freeze` with other libraries

The `packaging` library is fixed to `20.4` which creates a problem when trying to freeze dependencies:
```
There are incompatible versions in the resolved dependencies:
packaging==20.4 (from doltpy==2.0.9->-r requirements.train.in (line 1))
packaging>=20.0 (from transformers==4.11.0->-r requirements.in (line 10))
packaging>=14.3 (from google-cloud-secret-manager==2.7.2->-r requirements.in (line 11))
packaging>=20.9 (from huggingface-hub==0.0.17->transformers==4.11.0->-r requirements.in (line 10))
packaging (from mlflow==1.20.2->-r requirements.in (line 13))
```

Would it be possible to change this to a >= requirement?