chore: do not include name in Git tag

[BethGriggs]

Refs #1147 (comment), this should fix this per googleapis/release-please...schemas/config.json#L85-L87

Checklist

• contribution guidelines followed
  here

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.20%. Comparing base (09b04db) to head (72af6c0).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1183   +/-   ##
=======================================
  Coverage   96.20%   96.20%           
=======================================
  Files          29       29           
  Lines        2213     2213           
=======================================
  Hits         2129     2129           
  Misses         84       84           

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[BethGriggs]

Merging as a small fix and ideally will land before we release #1147