Update get_data.sh

[conceptofmind]

Only the most recent dump should be used which is now 2024-05-06. You are making numerous duplicates of the same data otherwise. This is confirmed by Mike Lissner.

I will update a script to include the rest of the Spark code next.

[conceptofmind]

The previous dumps also contain data that was purposefully removed in the newer dumps so the diffs should not be included.

[blester125]

LGTM, lets fix the lint error and add a comment about why only the newest data is needed so we don't forget and think that more dates is an easy way to get more data lol

[conceptofmind]

Will do. Other parts of the script need to be changed too but this is the most glaring issue. Will need to fix the rest of the text columns.

[conceptofmind]

Added comments:

# Only download the data from most recent CL dump
# The newest dump contains the previous dumps data 
# Differences from the previous data should not be included

And the lint should be ok for the other file now. Used black/isort.