github: publish signing keys (#226)

Publish singing key to the public key signing servers for ease of
verification via Web-of-Trust.

Author: xnox

.github/workflows/release.yml

@@ -39,6 +39,9 @@ jobs:
         with:
           gpg_private_key: ${{ steps.secrets.outputs.token }}
 
+      - run: |
+          gpg --keyserver keys.openpgp.org --send-keys ${{ steps.import_gpg.outputs.fingerprint }}
+
       - uses: goreleaser/goreleaser-action@9c156ee8a17a598857849441385a2041ef570552 # v6.3.0
         with:
           version: latest