fix: revert VERSION extraction to handle simple v-prefixed tags (#442)

The `##*/v` pattern requires a `/` before `v` to match, so it doesn't
strip the `v` from simple `v6.1.0` tags. Now that tags use `v6.1.0`
format, the original `#v` pattern is correct.

Co-authored-by: Garen J. Torikian <gjtorikian@users.noreply.github.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: 3 people

.github/workflows/release.yml

@@ -35,6 +35,6 @@ jobs:
 
       - name: Publish to RubyGems
         run: |
-          VERSION="${GITHUB_REF_NAME##*/v}"
+          VERSION="${GITHUB_REF_NAME#v}"
           bundle exec rake build
           gem push pkg/workos-${VERSION}.gem --host https://rubygems.org