message: feat(webview): use airgap-webview master branch
diff: <plugin name="cordova-plugin-add-swift-support" spec="~1.7.2" />
  <plugin name="cordova-plugin-queries-schemes" spec="https://github.com/rjhilgefort/cordova-plugin-queries-schemes.git" />
  <plugin name="cordova-plugin-ionic-keyboard" spec="^2.1.3" />
  - <plugin name="cordova-plugin-airgap-webview" spec="https://github.com/airgap-it/cordova-plugin-airgap-webview#remove-webserver" />
  + <plugin name="cordova-plugin-airgap-webview" spec="https://github.com/airgap-it/cordova-plugin-airgap-webview" />
  <engine name="android" spec="7.1.0" />
  <engine name="ios" spec="4.5.5" />
  </widget>
  