feat: remove GPG passphrase requirement from release workflow

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: joshpollara

.github/workflows/release.yml

@@ -85,7 +85,6 @@ jobs:
         uses: crazy-max/ghaction-import-gpg@v6
         with:
           gpg_private_key: ${{ secrets.GPG_PRIVATE_KEY }}
-          passphrase: ${{ secrets.GPG_PASSPHRASE }}
 
       - name: Run GoReleaser
         if: steps.check.outputs.skip != 'true'