Rename yamls

[OliviaLynn]

Now that we'll have just update_dashboard and not update_dashboard_group as well (same for index, index_group), I'm removing deprecated yamls and renaming the former *_group yamls to match our other renaming.

With update_dashboard_group becoming update_dashboard (same for index_group to index, etc), I'm removing deprecated yamls and renaming the ones we'll be using to match.

[delucchi-cmu]

I think you'll also want to make changes in:

• tests/lf_workflow_dash/test_module_action.py
• .github/workflows/main.yml

And I'm not sure why the unit test workflow didn't run? It would have failed with the missing yaml files...

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (f383fa7) 58.91% compared to head (246ac66) 58.91%.

❗ Current head 246ac66 differs from pull request most recent head 647cbcc. Consider uploading reports for the commit 647cbcc to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #29   +/-   ##
=======================================
  Coverage   58.91%   58.91%           
=======================================
  Files           3        3           
  Lines         129      129           
=======================================
  Hits           76       76           
  Misses         53       53           

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