Fix: Cropped Aron Fischer's picture to correct square aspect ratio (#…

…3855) (#3868)

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## Because
<!-- Summarize the purpose or reasons for this PR, e.g. what problem it
solves or what benefit it provides. -->Aron Fischer's avatar is not
displaying correctly because its picture is at 1200 x 400 instead of the
designed 400 x 400 ratio.

## This PR
<!-- A bullet point list of one or more items describing the specific
changes. -->
- Cropped the picture to square. Fixing the avatar display error.

## Issue
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Closes #3855 

## Additional Information
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