update buildPipeline.yml

Author: ashkan-khd

.github/workflows/buildPipeline.yml

@@ -21,4 +21,10 @@ jobs:
         working-directory: AlphaInvertedSearcher
       - name: Test
         run: dotnet test --no-restore --verbosity normal --collect:"XPlat Code Coverage"
-        working-directory: AlphaInvertedSearcher
+        working-directory: AlphaInvertedSearcher
+      - name: Publish code coverage reports to codecove.io
+        uses: codecov/codecov-action@v1
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          files: ./**/coverage.cobertura.xml
+          fail_ci_if_error: true