message: move types/aws4 to devDeps
diff: "@backstage/catalog-model": "^0.7.0",
  "@backstage/config": "^0.1.2",
  "@kubernetes/client-node": "^0.13.2",
  - "@types/aws4": "^1.5.1",
  "@types/express": "^4.17.6",
  "aws4": "^1.11.0",
  "compression": "^1.7.4",
  },
  "devDependencies": {
  "@backstage/cli": "^0.4.7",
  + "@types/aws4": "^1.5.1",
  "supertest": "^4.0.2"
  },
  "files": [
  