Update landlab notebooks

[smmorey]

replaced the 03 notebook
added bijou ascii file to the data folder

[mdpiper]

I ran the linters on this PR. Once the CI finishes, I'll merge it.

[mdpiper]

The notebook tests are failing because the file used in notebook 1, cell 10, isn't in Ivy:

RasterioIOError                           Traceback (most recent call last)
Cell In[10], line 1
----> 1 with rasterio.open("../../../../data/boulder39p5N-106W_NASADEM.tif") as src:
      2     dem = src.read(1)  # reads the first band as a 2D array
      3     dx = src.res[
      4         0

I'll turn off testing for these notebooks so that they can be merged and used for class tomorrow, but they should be fixed.

[mdpiper]

This time, the CI failed because of the OT API key ran out of tries. I think this PR is OK to merge.