chore(deps): bump mathjs from 5.10.3 to 7.5.1

Bumps [mathjs](https://github.com/josdejong/mathjs) from 5.10.3 to 7.5.1.
- [Changelog](https://github.com/josdejong/mathjs/blob/develop/HISTORY.md)
- [Commits](josdejong/mathjs@v5.10.3...v7.5.1)

---
updated-dependencies:
- dependency-name: mathjs
  dependency-version: 7.5.1
  dependency-type: direct:production
...

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

Author: dependabot[bot]

package-lock.json

@@ -78,7 +78,7 @@
     "delay": "^4.4.1",
     "eslint-plugin-import": "^2.31.0",
     "katex": "^0.10.0",
-    "mathjs": "^5.10.3",
+    "mathjs": "^7.5.1",
     "mf-parser": "^1.5.0",
     "mime-types": "^2.1.35",
     "node-jsgraph": "2.4.15",