openvidu-ionic: update Gradle version

openvidu-ionic/android/app/build.gradle

@@ -1,6 +1,8 @@
 apply plugin: 'com.android.application'
 
 android {
+
+    namespace 'io.openvidu.ionic'
     compileSdkVersion rootProject.ext.compileSdkVersion
     defaultConfig {
         applicationId "io.openvidu.ionic"

openvidu-ionic/android/app/src/main/AndroidManifest.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8" ?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="io.openvidu.ionic">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"

openvidu-ionic/android/build.gradle

@@ -1,13 +1,13 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    
+
     repositories {
         google()
         mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:7.2.1'
+        classpath 'com.android.tools.build:gradle:7.3.0'
         classpath 'com.google.gms:google-services:4.3.13'
 
         // NOTE: Do not place your application dependencies here; they belong