Bump prismjs from 1.28.0 to 1.30.0 in /DemoServer

Bumps [prismjs](https://github.com/PrismJS/prism) from 1.28.0 to 1.30.0.
- [Release notes](https://github.com/PrismJS/prism/releases)
- [Changelog](https://github.com/PrismJS/prism/blob/master/CHANGELOG.md)
- [Commits](PrismJS/prism@v1.28.0...v1.30.0)

---
updated-dependencies:
- dependency-name: prismjs
  dependency-type: direct:production
...

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

Author: dependabot[bot]

DemoServer/package-lock.json

@@ -17,7 +17,7 @@
     "js-cookie": "^2.2.1",
     "markdowndeep": "^1.6.12",
     "moment": "^2.29.4",
-    "prismjs": "^1.28.0",
+    "prismjs": "^1.30.0",
     "react": "^17.0.2",
     "react-dom": "^17.0.2",
     "react-helmet-async": "^2.0.5",