Updated requirement to Cordova 7.1.0, as latest qrcode scanner plugin requires it

config.xml

@@ -107,7 +107,6 @@
         </edit-config>
     </platform>
     <engine name="android" spec="^6.2.3" />
-    <engine name="ios" spec="^4.5.5" />
     <plugin name="cordova-plugin-camera" spec="^2.4.1" />
     <plugin name="cordova-plugin-console" spec="^1.0.7" />
     <plugin name="cordova-plugin-device" spec="^1.1.6" />
@@ -125,4 +124,5 @@
     <plugin name="phonegap-plugin-barcodescanner" spec="git+https://github.com/phonegap/phonegap-plugin-barcodescanner.git">
         <variable name="CAMERA_USAGE_DESCRIPTION" value=" " />
     </plugin>
+    <engine name="ios" spec="~4.5.5" />
 </widget>

package.json

@@ -30,7 +30,7 @@
     "new": "https://git.duniter.org/clients/cesium-grp/cesium/issues/new"
   },
   "dependencies": {
-    "cordova": "^6.5.0",
+    "cordova": "^7.1.0",
     "cordova-android": "^6.2.3",
     "cordova-ios": "^4.5.5",
     "cordova-plugin-camera": "^2.4.1",