message: remove labs package
diff: "@backstage/theme": "^0.2.14",
  "@material-ui/core": "^4.12.2",
  "@material-ui/icons": "^4.9.1",
  - "@material-ui/lab": "4.0.0-alpha.57",
  "qs": "^6.10.3",
  "cross-fetch": "^3.0.6",
  "lodash": "^4.17.21",
  