make installer workflow not slow as shit

.forgejo/workflows/build-installer.yml

@@ -24,7 +24,7 @@ jobs:
       uses: https://github.com/gradle/actions/setup-gradle@v3
     - name: Build
       run: | 
-        ./gradlew --no-daemon build
+        ./gradlew --no-daemon Installer:build
         bash mobf.sh Installer/build/libs/BaseBand-Installer.jar
     - name: Upload Installer
       uses: forgejo/upload-artifact@v4