Update useP5Version.jsx to include 1.11.8 patch

[ksen0]

We recently released p5.js 1.11.8! This adds it to the version picker.

Changes:

I have verified that this pull request:

• has no linting errors (npm run lint)
• has no test errors (npm run test)
• is from a uniquely-named feature branch and is up to date with the develop branch.
• is descriptively named and links to an issue number, i.e. Fixes #123

[release-com]

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• p5.js-web-editor
  • app-tedf3d3.release.editor.p5js.org/
  • preview-tedf3d3.release.editor.p5js.org/

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