Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

A target relying on a source that doesn't exist display the wrong error message

Loading Pipeline "/tmp/demo_github_app.updatecli.yaml"
WARNING: Updatecli binary version is unset. This means you are using a development version that ignores manifest version constraint.
ERROR: the specified sourceid "latestVersion" for condition[id] does not exist
ERROR: failed loading pipeline(s)
	* /tmp/demo_github_app.updatecli.yaml:
		targets validation error:
		wrong updatecli configuration

Expected Behavior

Instead of
ERROR: the specified sourceid "latestVersion" for condition[id] does not exist
it should display

ERROR: the specified sourceid "latestVersion" for target[<with the real target id>] does not exist

Steps To Reproduce

No response

Environment

- OS: linux
- updatecli: v0.108.0

Pipeline Graph

Anything else?

No response