fix version

Author: Maksim Litvinov

.github/workflows/build.yml

@@ -17,7 +17,7 @@ jobs:
       - name: Build with Gradle
         uses: gradle/actions/setup-gradle@v4
         with:
-          gradle-version: 8.12
+          gradle-version: "8.12"
       - run: ./gradlew checkstyleMain
       - run: ./gradlew test