add target echo-ldflags to fix the release and gitops version command

[enekofb]

Closes #3343

What changed?
Add back target echo-ldflags printing CMD_GITOPS_LDFLAGS variable to pass them to goreleaser that will build and publish gitops-ee binary

Why was this change made?

To both fix the original issue and the release

How did you validate the change?

• Explain how a reviewer can verify the change themselves

1. Fork the repo ( ex https://github.com/enekofb/weave-gitops-enterprise)
2. add the change in this PR
3. tweak the release workflow to execute the failing parts
4. tag your change with va.b.c and execute the release workflow
   You should see that

• the make target file has been executed correctly
• goreleaser has the values propagated

• Integration tests -- what is covered, what cannot be covered;
  or, explain why there are no new tests
• Unit tests -- what is covered, what cannot be covered; are
  there tests that fail without the change?
  Not required

Release notes

No

Documentation Changes

No

Other follow ups

No