Update markdown package

[micahmo]

Pull Request Description

Updating the markdown package to get the fix from thunder-app/markdown-editor#11

Issue Being Fixed

Issue Number: #1726

Screenshots / Recordings

qemu-system-x86_64_SaqXLYewAt.mp4

Checklist

• If a new package was added, did you ensure it uses an appropriate license and is actively maintained?
• Did you use localized strings (and added appropriate descriptions) where applicable?
• Did you add semanticLabels where applicable for accessibility?

[hjiangsu]

LGTM!