message: add concurrently to the dev dependencies for flask
diff: }
  },
  "postActions": [
  + {
  + "description": "Add Flask Dev Dependencies",
  + "manualInstructions": [],
  + "actionId": "CB387AC0-16D0-4E07-B41A-F1EA616A7CA9",
  + "args": {
  + "dict": "{'concurrently': '^4.1.0'}",
  + "key": "devDependencies",
  + "jsonPath": "package.json"
  + },
  + "continueOnError": false
  + }
  ]
  }
  \ No newline at end of file
  