wip: run on staging

Author: not-matthias

.github/workflows/ci.yml

@@ -91,6 +91,7 @@ jobs:
           mode: ${{ matrix.codspeed-mode }}
           run: examples/google_benchmark_cmake/build/benchmark_example
           token: ${{ secrets.CODSPEED_TOKEN }}
+          upload-url: https://api.staging.preview.codspeed.io/upload
 
   bazel-integration-tests:
     strategy:
@@ -131,6 +132,7 @@ jobs:
           mode: ${{ matrix.codspeed-mode }}
           run: bazel run //examples/google_benchmark_bazel:my_benchmark --@codspeed_core//:codspeed_mode=${{ matrix.codspeed-mode }} --@codspeed_core//:strict_warnings=on
           token: ${{ secrets.CODSPEED_TOKEN }}
+          upload-url: https://api.staging.preview.codspeed.io/upload
 
   cmake-build:
     strategy: