Bump mocha from 10.2.0 to 10.3.0 in /client (#379)

Bumps [mocha](https://github.com/mochajs/mocha) from 10.2.0 to 10.3.0.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](mochajs/mocha@v10.2.0...v10.3.0)

---
updated-dependencies:
- dependency-name: mocha
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

client/package-lock.json

@@ -20,7 +20,7 @@
         "@types/glob": "^8.1.0",
         "@types/vscode": "1.87.0",
         "@vscode/test-electron": "^2.3.9",
-        "mocha": "^10.2.0"
+        "mocha": "^10.3.0"
     },
     "dependencies": {
         "@types/lodash": "^4.14.202",