wip: use latest runner; enable memory

Author: not-matthias

.github/workflows/ci.yml

@@ -143,7 +143,7 @@ jobs:
         mode:
           - walltime
           - instrumentation
-          # - memory
+          - memory
     runs-on: ${{ matrix.mode == 'walltime' && 'codspeed-macro' || 'ubuntu-latest' }}
     steps:
       - uses: actions/checkout@v4
@@ -169,12 +169,14 @@ jobs:
           fi
 
       - name: Run the benchmarks
-        uses: CodSpeedHQ/action@main
+        uses: CodSpeedHQ/action@chore/runner-branch
         env:
           MY_ENV_VAR: "YES"
         with:
+          runner-branch: main
           run: cargo codspeed run
           mode: ${{ matrix.mode }}
+          upload-url: https://api.staging.preview.codspeed.io/upload
 
   musl-build-check:
     strategy: