Bump prismjs from 1.15.0 to 1.23.0 in /frontend/web

Bumps [prismjs](https://github.com/PrismJS/prism) from 1.15.0 to 1.23.0.
- [Release notes](https://github.com/PrismJS/prism/releases)
- [Changelog](https://github.com/PrismJS/prism/blob/master/CHANGELOG.md)
- [Commits](PrismJS/prism@v1.15.0...v1.23.0)

Signed-off-by: dependabot[bot] <support@github.com>

frontend/web/package.json

@@ -8,7 +8,7 @@
   },
   "dependencies": {
     "core-js": "^3.6.5",
-    "prismjs": "1.15.0",
+    "prismjs": "1.23.0",
     "vue": "^2.6.11",
     "vue-analytics": "^5.22.1",
     "vue-mermaid": "0.0.14",