Replace Dataset Link for VerticaPy Spotify Notebook Example

[thepranj]

The dataset link for the Spotify example points to a Kaggle page which does not exist anymore. The new link for the dataset can be found here: https://www.kaggle.com/datasets/yamaerenay/spotify-dataset-19212020-600k-tracks

This new dataset contains 4x many tracks as the old dataset. We may need to upload our own copy of the old dataset for consistency sake, or perhaps re-do the demo with the new data. Another option is just put a disclaimer that our anaylsis/models use an older version of the data so the results will differ.

Link to Repo in question: https://github.com/vertica/VerticaPy/tree/master/examples/business/spotify