Bump mocha from 9.1.3 to 11.0.1

Mocha depends on a vulnerable version of `nanoid`: GHSA-mwcw-c2x4-8c55

The package was updated with: `npm audit fix --force`

```
# npm audit report

nanoid  <3.3.8
Infinite loop in nanoid - GHSA-mwcw-c2x4-8c55
fix available via `npm audit fix --force`
Will install [email protected], which is a breaking change
node_modules/nanoid
  mocha  8.2.0 - 10.2.0
  Depends on vulnerable versions of nanoid
  node_modules/mocha

2 low severity vulnerabilities

To address all issues (including breaking changes), run:
  npm audit fix --force
```