Sign on release

Author: purejava

.github/workflows/release_to_maven.yml

@@ -20,7 +20,7 @@ jobs:
       - name: Release Maven package
         uses: samuelmeuli/action-maven-publish@v1
         with:
-          maven_args: -D=skipTests=true
+          maven_args: -D=skipTests=true -Psign
           gpg_private_key: ${{ secrets.GPG_PRIVATE_KEY }}
           gpg_passphrase: ${{ secrets.GPG_PASSPHRASE }}
           nexus_username: ${{ secrets.NEXUS_USERNAME }}