GitHub Actions: add secrets for Maven Central portal credentials to release workflow

Author: hsz

.github/workflows/release.yml

@@ -79,6 +79,8 @@ jobs:
           ORG_GRADLE_PROJECT_mavenCentralPassword: ${{ secrets.MAVEN_CENTRAL_PASSWORD }}
           ORG_GRADLE_PROJECT_signingKey: ${{ secrets.SIGNING_KEY }}
           ORG_GRADLE_PROJECT_signingPassword: ${{ secrets.SIGNING_PASSWORD }}
+          ORG_GRADLE_PROJECT_centralPortalUserName: ${{ secrets.CENTRAL_PORTAL_USERNAME }}
+          ORG_GRADLE_PROJECT_centralPortalToken: ${{ secrets.CENTRAL_PORTAL_TOKEN }}
         run: ./gradlew publishMavenToCentralPortal
 
       # Publish the plugin to JetBrains Marketplace