Bump electron from 5.0.7 to 6.0.4

Bumps [electron](https://github.com/electron/electron) from 5.0.7 to 6.0.4.
- [Release notes](https://github.com/electron/electron/releases)
- [Commits](https://github.com/electron/electron/compare/v5.0.7...v6.0.4)

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

package.json

@@ -15,7 +15,7 @@
     "core-js": "^3.2.0",
     "cross-env": "5.2.0",
     "css-loader": "3.2.0",
-    "electron": "^5.0.7",
+    "electron": "^6.0.4",
     "electron-builder": "^21.0.8",
     "electron-installer-snap": "^4.0.0",
     "electron-notarize": "^0.1.1",

yarn.lock

@@ -1960,10 +1960,10 @@ electron-rebuild@^1.8.5:
     spawn-rx "^3.0.0"
     yargs "^13.2.2"
 
-electron@^5.0.7:
-  version "5.0.7"
-  resolved "https://registry.yarnpkg.com/electron/-/electron-5.0.7.tgz#a48fcbd13d30f16f7d7887908b68e52156e90259"
-  integrity sha512-OMMz8DhatxLuBFbnW7KYcAUjflGYFn0IQEtKR0iZhMAm89FgNOd9SVbxXWAGNxvRR6C0gORXwhTh6BCqqqcR6Q==
+electron@^6.0.4:
+  version "6.0.4"
+  resolved "https://registry.yarnpkg.com/electron/-/electron-6.0.4.tgz#28372c458f615c6cd989d75e602b1fdad48b6180"
+  integrity sha512-zrPi36etADOAjxnVX6TxRNKSWaBscMLd9S7AB+qISzI0dnYIDKycHpc2mB+5QWBd/8cR4m/1NLNTqNhX5KKGFg==
   dependencies:
     "@types/node" "^10.12.18"
     electron-download "^4.1.0"