Bump prismjs and refractor in /example/spa

Bumps [prismjs](https://github.com/PrismJS/prism) and [refractor](https://github.com/wooorm/refractor). These dependencies needed to be updated together.

Updates `prismjs` from 1.23.0 to 1.27.0
- [Release notes](https://github.com/PrismJS/prism/releases)
- [Changelog](https://github.com/PrismJS/prism/blob/master/CHANGELOG.md)
- [Commits](PrismJS/prism@v1.23.0...v1.27.0)

Updates `refractor` from 3.3.1 to 3.6.0
- [Release notes](https://github.com/wooorm/refractor/releases)
- [Changelog](https://github.com/wooorm/refractor/blob/main/changelog.md)
- [Commits](wooorm/refractor@3.3.1...3.6.0)

---
updated-dependencies:
- dependency-name: prismjs
  dependency-type: indirect
- dependency-name: refractor
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>