Switch to the greedy scheduler

Author: imallona

.github/workflows/benchmark.yml

@@ -15,7 +15,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Use action 
-        uses: omnibenchmark/run_omnibenchmark@main
+        uses: omnibenchmark/run_omnibenchmark@greedy_sched
         with:
           yaml: Clustering_conda.yml
           backend: conda