Try different vars

Author: purejava

.github/workflows/release_to_maven.yml

@@ -27,6 +27,7 @@ jobs:
           echo "signing.gnupg.homeDir=${{ github.workspace }}/.gnupg" >> ~/.gradle/gradle.properties
           echo "signing.gnupg.keyName=ABC48776" >> ~/.gradle/gradle.properties
           echo "signing.gnupg.passphrase=${GPG_SIGNING_KEY_PW}" >> ~/.gradle/gradle.properties
+          echo "signing.gnupg.executable=gpg" >> ~/.gradle/gradle.properties
           echo "sonatypeUsername=${SONATYPE_USERNAME}" >> ~/.gradle/gradle.properties
           echo "sonatypePassword=${SONATYPE_PASSWORD}" >> ~/.gradle/gradle.properties
         env: