Secrets fixed

Author: dericop

.github/workflows/main.yml

@@ -51,6 +51,6 @@ jobs:
       - name: Push codeCoverage to Codecov
         run: bash <(curl -s https://codecov.io/bash)
       - name: Echo credentials
-        run: echo "bintrayUser=${{BINTRAY_USER}}\nbintrayApiKey=${{BINTRAY_KEY}}" >> gradle.properties
+        run: echo "bintrayUser=${{secrets.BINTRAY_USER}}\nbintrayApiKey=${{secrets.BINTRAY_KEY}}" >> gradle.properties
       - name: Publish plugin
         run: ./gradlew bintrayUpload