Chore: run tests in pipeline

Author: jonherrmann

.github/workflows/gradle.yml

@@ -15,11 +15,13 @@ jobs:
           distribution: 'temurin'
       - name: Setup Gradle
         uses: gradle/gradle-build-action@v2
+      - name: Run tests
+        run: ./gradlew test
       - name: Execute Gradle build
-        run: ./gradlew war
+        run: ./gradlew clean war
       - name: Release
         uses: softprops/action-gh-release@v1
         if: startsWith(github.ref, 'refs/tags/')
         with:
           draft: true
-          files: etf-webapp/build/libs/etf-webapp.war
+          files: etf-webapp/build/libs/etf-webapp.war