ci: fix codecov

Author: viceice

.github/workflows/build.yml

@@ -53,6 +53,6 @@ jobs:
       - name: Codecov
         uses: codecov/codecov-action@13ce06bfc6bbe3ecf90edbbf1bc32fe5978ca1d3 # v5.3.1
         with:
-          files: '*.cobertura.xml'
+          files: '**/TestResults/*/*.cobertura.xml'
           fail_ci_if_error: true
           token: ${{ secrets.CODECOV_TOKEN }}