chore(deps-dev): bump spectron from 7.0.0 to 12.0.0

Bumps [spectron](https://github.com/electron/spectron) from 7.0.0 to 12.0.0.
- [Release notes](https://github.com/electron/spectron/releases)
- [Changelog](https://github.com/electron-userland/spectron/blob/master/CHANGELOG.md)
- [Commits](electron-userland/spectron@v7.0.0...v12.0.0)

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

Author: dependabot-preview[bot]

package.json

@@ -94,7 +94,7 @@
     "mocha": "^7.2.0",
     "nan": "^2.14.2",
     "node-loader": "^0.6.0",
-    "spectron": "^7.0.0",
+    "spectron": "^12.0.0",
     "ts-mocha": "^8.0.0",
     "ts-node": "^9.0.0",
     "tslint": "^6.1.3",