Bump electron from 5.0.7 to 6.0.9

Bumps [electron](https://github.com/electron/electron) from 5.0.7 to 6.0.9.
- [Release notes](https://github.com/electron/electron/releases)
- [Commits](electron/electron@v5.0.7...v6.0.9)

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

Author: dependabot-preview[bot]

package-lock.json

@@ -108,7 +108,7 @@
     "cross-env": "5.2.1",
     "css-loader": "0.28.11",
     "ejs-loader": "0.3.3",
-    "electron": "5.0.7",
+    "electron": "6.0.9",
     "electron-builder": "20.44.4",
     "empty-module": "0.0.2",
     "enzyme": "3.10.0",