Update GIF

Author: martinRenou

README.md

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 The [xeus-python](https://github.com/jupyter-xeus/xeus-python) Python kernel for JupyterLite running in the browser.
 
-![jupyterlite-xeus-python](https://user-images.githubusercontent.com/591645/136570953-9bae67ad-fca6-436a-99e8-4cb6b0536d8c.gif)
+![jupyterlite-xeus-python](https://user-images.githubusercontent.com/21197331/167814755-76975633-30f7-4f8e-8fdb-eeec98fa3fd1.gif)
 
 
 ## Requirements