Updates node-sass and the sass-loader dependency (#764)

Signed-off-by: Marcos Iglesias Valle <golodhros@gmail.com>

amundsen_application/static/package.json

@@ -100,14 +100,14 @@
     "lint-staged": "^10.2.11",
     "mini-css-extract-plugin": "^0.10.0",
     "moment-locales-webpack-plugin": "^1.2.0",
-    "node-sass": "^4.14.1",
+    "node-sass": "^5.0.0",
     "postcss": "^7.0.32",
     "prettier": "^2.0.5",
     "react-docgen-typescript-loader": "^3.7.2",
     "redux-mock-store": "^1.5.4",
     "redux-saga": "^1.1.3",
     "redux-saga-test-plan": "4.0.0-rc.3",
-    "sass-loader": "^10.0.2",
+    "sass-loader": "^10.0.5",
     "style-loader": "^0.20.3",
     "stylelint": "^13.7.2",
     "stylelint-config-standard": "^20.0.0",