Adjust subsetting parameters to avoid triggering an error

[kafitzgerald]

Adjusts bounding box subsetting parameters to avoid returning an empty array that triggers a ValueError (see UXARRAY/uxarray#1285) and causes a CI failure.

Closes #28

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[kafitzgerald]

Let me see if I can fix the link checker here as well.

[kafitzgerald]

Well, I was able to address one of them (i.e. broken links), but these are still proving problematic:

(notebooks/03-plotting-with-uxarray/customization: line 150003) broken    https://i.postimg.cc/9MqxSYCn/bokeh-1.gif - 502 Server Error: Bad Gateway for url: https://i.postimg.cc/9MqxSYCn/bokeh-1.gif
(notebooks/03-plotting-with-uxarray/customization: line 170002) broken    https://i.postimg.cc/3JpTp2G9/dynamic.gif - 502 Server Error: Bad Gateway for url: https://i.postimg.cc/3JpTp2G9/dynamic.gif

I did log a separate issue for these though.

[kafitzgerald]

@philipc2, @erogluorhan - I don't know that I can request reviews on here, but FYI this should fix things with the notebooks.

It looks like the image hosting service is back up as well so the linkcheck will likely pass if we rerun that (I don't have permissions).