Update cmake.yml

Author: kcotto

.github/workflows/cmake.yml

@@ -47,5 +47,5 @@ jobs:
       uses: coverallsapp/github-action@master
       with:
         github-token: ${{ secrets.GITHUB_TOKEN }}
-        path-to-lcov: coverage.run.filtered
+        path-to-lcov: build/coverage.run.filtered