Build(deps): Bump prismjs from 1.24.0 to 1.25.0 in /examples/express (#1889)

Bumps [prismjs](https://github.com/PrismJS/prism) from 1.24.0 to 1.25.0.
- [Release notes](https://github.com/PrismJS/prism/releases)
- [Changelog](https://github.com/PrismJS/prism/blob/master/CHANGELOG.md)
- [Commits](PrismJS/prism@v1.24.0...v1.25.0)

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

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