Example data in `m3c2ep_change_analysis.ipynb` is no longer accessible

[deemoe404]

In file m3c2ep_change_analysis.ipynb, cell 2 attempts to download example data using the following URL:

# Url for download of data
url = "https://heibox.uni-heidelberg.de/f/5178311eda2e475489d3/?dl=1"

However, running this cell produces the following output before throwing an error:

/tmp/tmp4k91olqt/m3c2ep_testdata.zip
Failed to unpack data: File is not a zip file

Additionally, when accessing the URL in a browser, it returns a “Permission denied” error.