Updated Excalidraw icon

[arnostpleskot]

Pre-flight Checklist

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• [x] I have read the Contributing Guidelines for this project.
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Description of Change

This PR updates an icon in the Excalidraw recipe to use the current one.

[mcmxcdev]

Thanks for the update!

[Alphrag]

@all-contributors please add @arnostpleskot for code

[allcontributors[bot]]

@Alphrag

I've put up a pull request to add @arnostpleskot! :tada: