removed image minification using imagemin because of constant platform related issues

package.json

@@ -48,10 +48,6 @@
     "http-proxy-agent": "4.0.1",
     "https-proxy-agent": "5.0.0",
     "image-type": "4.1.0",
-    "imagemin": "7.0.1",
-    "imagemin-giflossy": "5.1.10",
-    "imagemin-mozjpeg": "9.0.0",
-    "imagemin-pngquant": "9.0.0",
     "ini": "1.3.5",
     "is-svg": "4.2.1",
     "jimp": "0.13.0",
@@ -81,7 +77,7 @@
     "cross-env": "^7.0.2",
     "electron": "10.0.0-beta.4",
     "electron-builder": "22.7.0",
-    "electron-packager": "14.2.1",
+    "electron-packager": "15.0.0",
     "electron-rebuild": "1.11.0",
     "esm": "^3.2.25",
     "jasmine": "^3.5.0",