message: Update dependencies.
  Also rolling back node-sass to version 4.6.1 to avoid some security vulnerabilities.
diff: "@types/chai": "^4.1.3",
  "@types/enzyme": "^3.1.10",
  "@types/mocha": "^5.2.0",
  - "@types/node": "^10.1.1",
  + "@types/node": "^10.1.2",
  "@types/react": "^16.3.14",
  "@types/react-dom": "^16.0.5",
  "@types/sinon": "^4.3.3",
  "dotenv": "^5.0.1",
  "enzyme": "^3.3.0",
  "enzyme-adapter-react-16": "^1.1.1",
  - "enzyme-to-json": "^3.3.3",
  + "enzyme-to-json": "^3.3.4",
  "exports-loader": "^0.7.0",
  "file-loader": "^1.1.11",
  "fs-extra": "^6.0.1",
  "html-webpack-plugin": "^3.2.0",
  "imports-loader": "^0.8.0",
  "istanbul-instrumenter-loader": "^3.0.1",
  - "jsdom": "^11.10.0",
  + "jsdom": "^11.11.0",
  "license-webpack-plugin": "^1.3.1",
  "lodash": "^4.17.10",
  "mini-css-extract-plugin": "^0.4.0",
  - "mocha": "^5.1.1",
  + "mocha": "^5.2.0",
  "mocha-junit-reporter": "^1.16.0",
  "mocha-webpack": "^2.0.0-beta.0",
  - "node-sass": "^4.9.0",
  - "nodemon": "^1.17.4",
  + "node-sass": "4.6.1",
  + "nodemon": "^1.17.5",
  "null-loader": "^0.1.1",
  "nyc": "^11.8.0",
  "object-assign": "^4.1.1",
  "react-dev-utils": "^5.0.1",
  "readline": "^1.3.0",
  "sass-loader": "^7.0.1",
  - "sinon": "^5.0.7",
  + "sinon": "^5.0.10",
  "source-map-loader": "^0.2.3",
  "style-loader": "^0.21.0",
  "svg-sprite-loader": "~3.7.1",
  