Removed fs-extra dependency again, updated electron build resolution

Author: spoenemann

arduino-ide-extension/package.json

@@ -29,7 +29,6 @@
     "@types/which": "^1.3.1",
     "css-element-queries": "^1.2.0",
     "dateformat": "^3.0.3",
-    "fs-extra": "^8.1.0",
     "google-protobuf": "^3.11.0",
     "p-queue": "^5.0.0",
     "ps-tree": "^1.2.0",

electron/build/template-package.json

@@ -7,7 +7,7 @@
     "arduino-ide-extension": "file:../working-copy/arduino-ide-extension"
   },
   "resolutions": {
-    "**/fs-extra": "^4.0.2"
+    "**/fs-extra": "^8.1.0"
   },
   "devDependencies": {
     "electron-builder": "^21.2.0"