chore(TECHOPS-18898): fix gpg agent error in release workflow (#16)

### Summary
This PR adds the required GPG key fingerprint secret to fix the ERR
67108891 Not found <GPG Agent> error that occurs during the release
process on Ubuntu 24.04 runners.

### Details

- The crazy-max/ghaction-import-gpg@v6.1.0 action requires a fingerprint
when working with GPG subkeys, especially on newer Ubuntu versions
- Added PUBLIC_RELEASES_GPG_FINGERPRINT to the secrets passed to the
workflow
- This ensures the action can properly identify the signing key and
communicate with the GPG agent

### Testing

Tested fix here, after the fingerprint added gpg key import is working:
https://github.com/circlefin/circle-ooak/actions/runs/17562651750/job/49882514240#step:5:3

Author: yemi-gbenebor

.github/workflows/release.yml

@@ -28,6 +28,7 @@ jobs:
       RELEASE_TOKEN: ${{ secrets.PUBLIC_RELEASES_TOKEN }}
       RELEASE_ACTOR_GPG_PRIVATE_KEY: ${{ secrets.PUBLIC_RELEASES_GPG_PRIVATE_KEY }}
       RELEASE_ACTOR_GPG_PASSPHRASE: ${{ secrets.PUBLIC_RELEASES_GPG_PASSPHRASE }}
+      RELEASE_ACTOR_GPG_KEY_FINGERPRINT: ${{ secrets.PUBLIC_RELEASES_GPG_FINGERPRINT }}
 
   pypi-publish:
     name: Publish to PyPI