Remove example project from publishing build step

Author: TheoKanning

.github/workflows/publish.yml

@@ -30,7 +30,7 @@ jobs:
         java-version: 8
 
     - name: Publish
-      run: ./gradlew build publish --no-parallel
+      run: ./gradlew build -x :example:build publish --no-parallel
       env:
         ORG_GRADLE_PROJECT_mavenCentralUsername: ${{ secrets.SONATYPE_NEXUS_USERNAME }}
         ORG_GRADLE_PROJECT_mavenCentralPassword: ${{ secrets.SONATYPE_NEXUS_PASSWORD }}