message: plugins/graphiql: move dev and test utils to devDependencies
diff: },
  "devDependencies": {
  "@backstage/cli": "^0.1.1-alpha.4",
  + "@backstage/dev-utils": "^0.1.1-alpha.4",
  + "@backstage/test-utils": "^0.1.1-alpha.4",
  "@testing-library/jest-dom": "^4.2.4",
  "@testing-library/react": "^9.3.2",
  "@testing-library/user-event": "^7.1.2",
  },
  "dependencies": {
  "@backstage/core": "^0.1.1-alpha.4",
  - "@backstage/dev-utils": "^0.1.1-alpha.4",
  - "@backstage/test-utils": "^0.1.1-alpha.4",
  "@backstage/theme": "^0.1.1-alpha.4",
  "@material-ui/core": "^4.9.1",
  "@material-ui/icons": "^4.9.1",
  