message: Move test-utils to devDeps
diff: "@backstage/plugin-tech-radar": "^{{version '@backstage/plugin-tech-radar'}}",
  "@backstage/plugin-techdocs": "^{{version '@backstage/plugin-techdocs'}}",
  "@backstage/plugin-user-settings": "^{{version '@backstage/plugin-user-settings'}}",
  - "@backstage/test-utils": "^{{version '@backstage/test-utils'}}",
  "@backstage/theme": "^{{version '@backstage/theme'}}",
  "@material-ui/core": "^4.12.2",
  "@material-ui/icons": "^4.9.1",
  "react-use": "^15.3.3"
  },
  "devDependencies": {
  + "@backstage/test-utils": "^{{version '@backstage/test-utils'}}",
  "@testing-library/jest-dom": "^5.10.1",
  "@testing-library/react": "^10.4.1",
  "@testing-library/user-event": "^12.0.7",
  