Add support for Emoji v15.0

app/src/main/java/org/thoughtcrime/securesms/migrations/ApplicationMigrations.java

@@ -131,9 +131,10 @@ public class ApplicationMigrations {
     static final int PREKEY_SYNC                   = 87;
     static final int DEDUPE_DB_MIGRATION           = 88;
     static final int DEDUPE_DB_MIGRATION_2         = 89;
+    static final int EMOJI_VERSION_8               = 90;
   }
 
-  public static final int CURRENT_VERSION = 89;
+  public static final int CURRENT_VERSION = 90;
 
   /**
    * This *must* be called after the {@link JobManager} has been instantiated, but *before* the call
@@ -591,6 +592,10 @@ public class ApplicationMigrations {
       jobs.put(Version.DEDUPE_DB_MIGRATION_2, new DatabaseMigrationJob());
     }
 
+    if (lastSeenVersion < Version.EMOJI_VERSION_8) {
+      jobs.put(Version.EMOJI_VERSION_8, new EmojiDownloadMigrationJob());
+    }
+
     return jobs;
   }