Bump spectron from 11.0.0 to 14.0.0 in /desktop

Bumps [spectron](https://github.com/electron/spectron) from 11.0.0 to 14.0.0.
- [Release notes](https://github.com/electron/spectron/releases)
- [Changelog](https://github.com/electron-userland/spectron/blob/master/CHANGELOG.md)
- [Commits](https://github.com/electron/spectron/commits)

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

desktop/e2e/package.json

@@ -9,7 +9,7 @@
   "bugs": "https://github.com/facebook/flipper/issues",
   "dependencies": {},
   "devDependencies": {
-    "spectron": "^11.0.0"
+    "spectron": "^14.0.0"
   },
   "scripts": {
     "test": "../ts-node ./main.ts"