chore(deps): bump mathjax from 3.2.2 to 4.0.0 in /templates

Bumps [mathjax](https://github.com/mathjax/MathJax) from 3.2.2 to 4.0.0.
- [Release notes](https://github.com/mathjax/MathJax/releases)
- [Commits](mathjax/MathJax@3.2.2...4.0.0)

---
updated-dependencies:
- dependency-name: mathjax
  dependency-version: 4.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

templates/package-lock.json

@@ -35,7 +35,7 @@
     "lit-html": "^3.3.1",
     "lunr": "2.3.9",
     "lunr-languages": "^1.14.0",
-    "mathjax": "^3.2.2",
+    "mathjax": "^4.0.0",
     "mermaid": "^11.9.0",
     "tsx": "^4.20.4"
   },