Update kilted track to release the same version as the source distribution.

Author: cottsay

tracks.yaml

@@ -225,7 +225,8 @@ tracks:
     ros_distro: kilted
     vcs_type: git
     vcs_uri: https://github.com/ros2/yaml_cpp_vendor.git
-    version: :{auto}
+    version: 9.1.0
+    version_saved: :{auto}
   rolling:
     actions:
     - bloom-export-upstream :{vcs_local_uri} :{vcs_type} --tag :{release_tag} --display-uri