Bump mathjs from 12.1.0 to 12.3.1

Bumps [mathjs](https://github.com/josdejong/mathjs) from 12.1.0 to 12.3.1.
- [Changelog](https://github.com/josdejong/mathjs/blob/develop/HISTORY.md)
- [Commits](josdejong/mathjs@v12.1.0...v12.3.1)

---
updated-dependencies:
- dependency-name: mathjs
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

package.json

@@ -31,7 +31,7 @@
         "express": "4.18.2",
         "express-minify": "1.0.0",
         "html-minifier-terser": "7.2.0",
-        "mathjs": "12.1.0",
+        "mathjs": "12.3.1",
         "morgan": "1.10.0",
         "node-schedule": "2.1.1",
         "terser": "5.24.0",