ci: set correct env var GRAILS_PUBLISH_RELEASE

Author: matrei

.github/workflows/gradle.yml

@@ -113,7 +113,7 @@ jobs:
       - name: "📤 Publish Snapshot artifacts"
         env:
           GITHUB_MAVEN_PASSWORD: ${{ secrets.GITHUB_TOKEN }}
-          GRADLE_PUBLISH_RELEASE: 'false'
+          GRAILS_PUBLISH_RELEASE: 'false'
           MAVEN_PUBLISH_URL: ${{ secrets.GRAILS_NEXUS_PUBLISH_SNAPSHOT_URL }}
           MAVEN_PUBLISH_USERNAME: ${{ secrets.NEXUS_USER }}
           MAVEN_PUBLISH_PASSWORD: ${{ secrets.NEXUS_PW  }}