Update fapping.yaml

.github/workflows/fapping.yaml

@@ -27,8 +27,9 @@ jobs:
       - name: Build Flipper Application Package (.fap)
         id: build-app
         uses: flipperdevices/flipperzero-ufbt-action@v0.1.4
-        #with:
-          #sdk-channel: ${{ github.ref == 'refs/heads/master' && 'release' || 'dev' }}
+        if: github.ref == 'refs/heads/dev'
+        with:
+          sdk-branch: 'dev'
          
       - name: Upload app artifacts
         uses: actions/upload-artifact@v3