Update build.yaml

.github/workflows/build.yaml

@@ -53,3 +53,5 @@ jobs:
           python -m pip install -e .
       - name: Install GDAL
         run: python -m pip install ${{ matrix.gdal-whl-url }}
+      - name: Test installation
+        run: python -c "import paddlers; print(paddlers.__version__)"