CB-12746: decrement working dev version on master to 6.2.4-dev, to align with impending patch release.

framework/build.gradle

@@ -40,7 +40,7 @@ apply plugin: 'com.github.dcendents.android-maven'
 apply plugin: 'com.jfrog.bintray'
 
 group = 'org.apache.cordova'
-version = '6.2.2'
+version = '6.2.4-dev'
 
 android {
     compileSdkVersion cdvCompileSdkVersion
@@ -127,9 +127,9 @@ bintray {
         licenses = ['Apache-2.0']
         labels = ['android', 'cordova', 'phonegap']
         version {
-            name = '6.2.2'
+            name = '6.2.4-dev'
             released  = new Date()
-            vcsTag = '6.2.2'
+            vcsTag = '6.2.4-dev'
         }
     }
 }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "cordova-android",
-  "version": "6.2.2",
+  "version": "6.2.4-dev",
   "description": "cordova-android release",
   "bin": {
     "create": "bin/create"