Warning in console when using CodePane

[AlbertBrand]

What version of Spectacle are you using? (can be found by running npm list spectacle)
9.2.1

What version of React are you using? (can be found by running npm list react)
18.2.0

Describe the Problem

Check the console when using a CodePane:

Warning: React does not recognize the `lineNumberProps` prop on a DOM element. If you intentionally want it to appear in the DOM as a custom attribute, spell it as lowercase `linenumberprops` instead. If you accidentally passed it from a parent component, remove it from the DOM element.

This is triggered by the upgrade of react-syntax-highlighter, they have dropped lineNumberProps in newer versions.
Interestingly it doesn't seem to cause problems with highlighting in theCodePane.

[mwritter]

Looks like this was due to a regression in react-syntax-highlighter, and also looks like a fix was started but not finished.
react-syntax-highlighter/react-syntax-highlighter#311