Add a new line at the end of the file

Co-authored-by: kota2and3kan <[email protected]>

Author: KodaiD

.github/workflows/ci.yml

@@ -37,4 +37,4 @@ jobs:
 
     - name: Build with Gradle Wrapper
       working-directory: ${{ matrix.project }}
-      run: ./gradlew build
+      run: ./gradlew build