Optimizer interface changed in more recent TensorFlow versions

[LucaCappelletti94]

In recent tensorflow versions, they changes the lr property to learning_rate.

https://github.com/keras-team/keras/blob/f6c4ac55692c132cd16211f4877fac6dbeead749/keras/src/optimizers/base_optimizer.py#L510-L542

I have gotten it to work with version 2.17 by changing likes such as:

CLR/clr_callback.py

Line 119 in 968cf5a

K.set_value(self.model.optimizer.lr, self.clr())

to:

self.model.optimizer.learning_rate = self.clr()

I will be making a PR with these changes shortly.