Bump electron from 9.3.1 to 9.4.0 in /app

Bumps [electron](https://github.com/electron/electron) from 9.3.1 to 9.4.0.
- [Release notes](https://github.com/electron/electron/releases)
- [Changelog](https://github.com/electron/electron/blob/master/docs/breaking-changes.md)
- [Commits](https://github.com/electron/electron/compare/v9.3.1...v9.4.0)

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

app/package-lock.json

@@ -2207,9 +2207,9 @@
       }
     },
     "electron": {
-      "version": "9.3.1",
-      "resolved": "https://registry.npmjs.org/electron/-/electron-9.3.1.tgz",
-      "integrity": "sha512-DScrhqBT4a54KfdF0EoipALpHmdQTn3m7SSCtbpTcEcG+UDUiXad2cOfW6DHeVH7N+CVDKDG12q2PhVJjXkFAA==",
+      "version": "9.4.0",
+      "resolved": "https://registry.npmjs.org/electron/-/electron-9.4.0.tgz",
+      "integrity": "sha512-hOC4q0jkb+UDYZRy8vrZ1IANnq+jznZnbkD62OEo06nU+hIbp2IrwDRBNuSLmQ3cwZMVir0WSIA1qEVK0PkzGA==",
       "dev": true,
       "requires": {
         "@electron/get": "^1.0.1",

app/package.json

@@ -37,7 +37,7 @@
   "devDependencies": {
     "@types/jquery": "^3.5.0",
     "chai": "^4.2.0",
-    "electron": "^9.3.1",
+    "electron": "^9.4.0",
     "electron-installer-common": "^0.10.2",
     "electron-installer-dmg": "^3.0.0",
     "electron-packager": "^15.0.0",