Unable to install latest version of azureml-automl-runtime via pip

I am unable to install the latest version (as shown on the [azureml-automl-runtime PyPI website](https://pypi.org/project/azureml-automl-runtime/)) :
i.e. ```azureml-automl-runtime 1.52.0.post1```

Using the command `pip index versions azureml-automl-runtime` gives the following output:
```azureml-automl-runtime (1.18.0.post2)
Available versions: 1.18.0.post2, 1.18.0.post1, 1.18.0, 1.17.0, 1.16.0, 1.15.0, 1.14.0.post1, 1.14.0, 1.13.0.post1, 1.13.0, 1.12.0.post1, 1.12.0, 1.11.0, 1.10.0.post1, 1.10.0, 1.9.0.post3, 1.9.0.post2, 1.9.0.post1, 1.9.0, 1.8.0, 1.7.0.post2, 1.7.0.post1, 1.7.0, 1.6.0.post2, 1.6.0.post1, 1.6.0, 1.5.0.post3, 1.5.0.post2, 1.5.0.post1, 1.5.0, 1.4.0.post2, 1.4.0.post1, 1.4.0, 1.3.0, 1.2.0.post1, 1.2.0, 1.1.5.4, 1.1.5.3, 1.1.5.2, 1.1.5.1, 1.1.5, 1.0.85.6, 1.0.85.5, 1.0.85.4, 1.0.85.3, 1.0.85.2, 1.0.85.1, 1.0.85, 1.0.83, 1.0.81, 1.0.79, 1.0.76.1, 1.0.76
Note: you may need to restart the kernel to use updated packages.
WARNING: pip index is currently an experimental command. It may be removed/changed in a future release without prior warning.
```

And usinig the command `pip install azureml-automl-runtime` installs version `1.18.0.post2`

I need to install version 1.49.1 as suggested in the following Documentation (for using AutoML in Databricks):
https://github.com/Azure/MachineLearningNotebooks/blob/d0961b98bf60a97abac6e9a1339b9a721427fd66/how-to-use-azureml/azure-databricks/automl/automl-databricks-local-01.ipynb#L20

Any help will be appreciated. Thank You !!