added keras and tensorflow version updates

[prprakash02]

The pull request contains changes to the following files:

lib_data.py:

• imgaug has been replaced with RandAugment from keras_cv, which relies on tensorflow v2.16.1
• An additional check for the magnitude parameter in RandAugment is added, warning is raised if out of bounds (warnings will be generated if ignore is modified in future iterations)
• sklearn.preprocessing dependencies are now up-to date

lib_model.py:

• tensorflow_addons is now replaced with keras_cv and there are two possible loss functions (added in comments). The implemented FocalLoss() is the same as the focal loss used in tensorflow_addons (please click the link for more info)

Kind Regards, Prakash

[zaandahl]

Updated base mewc-flow package to include keras-cv. PR passes workflow, approving merge