Add version 3.6.1 -> 3.7.0 to get_next_version() function

openvidu-deployment/update.sh

@@ -42,6 +42,7 @@ get_next_version() {
     "3.4.1") echo "3.5.0" ;;
     "3.5.0") echo "3.6.0" ;;
     "3.6.0") echo "3.6.1" ;;
+    "3.6.1") echo "3.7.0" ;;
     *) echo "" ;;
   esac
 }