Ensure tag-exists works as intended

[frederikprijck]

Changes

The tag-exists action was not working due to the fact that it was trying to read from a step that did not exist.
Without these changes, it would always 404 and act as if the tag doesn't exist.

Checklist

• I have read the Auth0 general contribution guidelines
• I have read the Auth0 Code of Conduct
• All code quality tools/guidelines have been run/followed

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (957c786) 100.00% compared to head (e96724c) 100.00%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##                main      #752   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
  Complexity      1381      1381           
===========================================
  Files             62        62           
  Lines           4776      4776           
===========================================
  Hits            4776      4776           

Flag	Coverage Δ
unittestsvalidate	100.00% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.