build(deps-dev): bump handlebars from 4.7.8 to 4.7.9

Bumps [handlebars](https://github.com/handlebars-lang/handlebars.js) from 4.7.8 to 4.7.9.
- [Release notes](https://github.com/handlebars-lang/handlebars.js/releases)
- [Changelog](https://github.com/handlebars-lang/handlebars.js/blob/v4.7.9/release-notes.md)
- [Commits](handlebars-lang/handlebars.js@v4.7.8...v4.7.9)

---
updated-dependencies:
- dependency-name: handlebars
  dependency-version: 4.7.9
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

package-lock.json

@@ -17,7 +17,7 @@
     "express": "^5.2.1",
     "fast-glob": "^3.3.3",
     "github-markdown-css": "^5.9.0",
-    "handlebars": "^4.7.8",
+    "handlebars": "^4.7.9",
     "showdown": "^2.1.0",
     "showdown-footnotes": "^2.1.2",
     "showdown-highlight": "^3.1.0"