Fix wrong secret key name

Author: Gyeongil Goo

.github/workflows/publish.yml

@@ -19,6 +19,6 @@ jobs:
       - run: cat ./gradle.properties
       - name: Publish plugins with gradle
         env:
-          GRADLE_PUBLISH_KEY: ${{ secrets.PUBLISH_KEY }}
-          GRADLE_PUBLISH_SECRET: ${{ secrets.PUBLISH_SECRET }}
+          GRADLE_PUBLISH_KEY: ${{ secrets.GRADLE_PUBLISH_KEY }}
+          GRADLE_PUBLISH_SECRET: ${{ secrets.GRADLE_PUBLISH_SECRET }}
         run: ./gradlew publishPlugins -Pgradle.publish.key=$GRADLE_PUBLISH_KEY -Pgradle.publish.secret=$GRADLE_PUBLISH_SECRET