chore: Bump electron from 4.2.8 to 7.2.4

Bumps [electron](https://github.com/electron/electron) from 4.2.8 to 7.2.4.
- [Release notes](https://github.com/electron/electron/releases)
- [Changelog](https://github.com/electron/electron/blob/master/docs/breaking-changes.md)
- [Commits](electron/electron@v4.2.8...v7.2.4)

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

Author: dependabot[bot]

packages/electron/package.json

@@ -34,7 +34,7 @@
   "devDependencies": {
     "@types/async-retry": "^1.2.1",
     "@types/checksum": "^0.1.30",
-    "electron": "^4.0.1",
+    "electron": "^7.2.4",
     "typescript": "^3.1.6"
   },
   "peerDependencies": {