feat(android) target sdk 31

android/app/build.gradle

     implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation 'androidx.appcompat:appcompat:1.2.0'
 
-    debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.2'
+    debugImplementation 'com.squareup.leakcanary:leakcanary-android:2.7'
 
     if (!rootProject.ext.libreBuild) {
         implementation 'com.google.android.gms:play-services-auth:16.0.1'
         def dropboxActivity = """
           <activity
               android:configChanges="keyboard|orientation"
+              android:exported="true"
               android:launchMode="singleTask"
               android:name="com.dropbox.core.android.AuthActivity">
             <intent-filter>

android/app/src/main/AndroidManifest.xml

         android:resource="@xml/app_restrictions" />
     <activity
         android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|screenSize|smallestScreenSize"
+        android:exported="true"
         android:label="@string/app_name"
         android:launchMode="singleTask"
         android:name=".MainActivity"

android/build.gradle

 
 ext {
     buildToolsVersion = "30.0.3"
-    compileSdkVersion = 30
+    compileSdkVersion = 31
     minSdkVersion    = 23
-    targetSdkVersion = 30
+    targetSdkVersion = 31
     supportLibVersion = "28.0.0"
 
     // The Maven artifact groupdId of the third-party react-native modules which

android/sdk/src/main/java/org/jitsi/meet/sdk/OngoingNotification.java

         }
 
         Intent notificationIntent = new Intent(context, context.getClass());
-        PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, notificationIntent, 0);
+        PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, notificationIntent, PendingIntent.FLAG_IMMUTABLE);
 
         NotificationCompat.Builder builder = new NotificationCompat.Builder(context, ONGOING_CONFERENCE_CHANNEL_ID);
 
         Intent intent = new Intent(context, JitsiMeetOngoingConferenceService.class);
         intent.setAction(action.getName());
         PendingIntent pendingIntent
-            = PendingIntent.getService(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
+            = PendingIntent.getService(context, 0, intent, PendingIntent.FLAG_IMMUTABLE);
         String title = context.getString(titleId);
         return new NotificationCompat.Action(0, title, pendingIntent);
     }