fix: upgrade electron-updater from 6.6.5 to 6.6.6

Snyk has created this PR to upgrade electron-updater from 6.6.5 to 6.6.6.

See this package in npm:
electron-updater

See this project in Snyk:
https://app.snyk.io/org/expensify/project/9be44749-775a-47a6-be6b-781145c25b98?utm_source=github&utm_medium=referral&page=upgrade-pr

Author: snyk-bot

desktop/package-lock.json

@@ -6,7 +6,7 @@
   "dependencies": {
     "electron-context-menu": "^2.3.0",
     "electron-log": "^4.4.8",
-    "electron-updater": "^6.6.5",
+    "electron-updater": "^6.6.6",
     "mime-types": "^2.1.35",
     "node-machine-id": "^1.1.12"
   },