Updating release inc to: 2

Author: cottsay

tracks.yaml

@@ -219,7 +219,7 @@ tracks:
     last_version: 9.1.0
     name: yaml_cpp_vendor
     patches: null
-    release_inc: '1'
+    release_inc: '2'
     release_repo_url: null
     release_tag: :{version}
     ros_distro: kilted