[Security] Bump electron from 8.1.1 to 9.4.0

Bumps [electron](https://github.com/electron/electron) from 8.1.1 to 9.4.0. **This update includes security fixes.**
- [Release notes](https://github.com/electron/electron/releases)
- [Changelog](https://github.com/electron/electron/blob/master/docs/breaking-changes.md)
- [Commits](electron/electron@v8.1.1...v9.4.0)

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

package.json

@@ -21,7 +21,7 @@
     "build-debian": "electron-installer-debian --src=release-builds/photopea-desktop-linux-x64/ --arch=amd64 --config=debian.json"
   },
   "devDependencies": {
-    "electron": "^8.1.1",
+    "electron": "^9.4.0",
     "electron-builder": "^22.2.0",
     "electron-packager": "^9.1.0",
     "electron-installer-debian": "^0.6.0"