message: doc(Node.jsExample): Update itk.js to 12.2.0
diff: {
  "name": "itk-convert",
  - "version": "1.1.1",
  + "version": "1.2.0",
  "description": "Convert images files from one format to another.",
  "bin": {
  "itk-convert": "./src/itk-convert.js"
  "homepage": "https://github.com/InsightSoftwareConsortium/itk-js#readme",
  "dependencies": {
  "commander": "^2.14.1",
  - "itk": "^9.4.1"
  + "itk": "^12.2.0"
  }
  }
  