bumping to 1.3.0 for jazzy release (ros-navigation#4480)

Author: SteveMacenski

nav2_bringup/package.xml

@@ -2,7 +2,7 @@
 <?xml-model href="http://download.ros.org/schema/package_format3.xsd" schematypens="http://www.w3.org/2001/XMLSchema"?>
 <package format="3">
   <name>nav2_bringup</name>
-  <version>1.2.0</version>
+  <version>1.3.0</version>
   <description>Bringup scripts and configurations for the Nav2 stack</description>
   <maintainer email="[email protected]">Michael Jeronimo</maintainer>
   <maintainer email="[email protected]">Steve Macenski</maintainer>