Update benchmarks.yml

Author: Illviljan

.github/workflows/benchmarks.yml

@@ -51,6 +51,7 @@ jobs:
           echo "Baseline:  ${{ github.event.pull_request.base.sha }} (${{ github.event.pull_request.base.label }})"
           echo "Contender: ${GITHUB_SHA} (${{ github.event.pull_request.head.label }})"
           # Use mamba for env creation
+          # export CONDA_EXE=$(which mamba)
           export CONDA_EXE=$(which conda)
           # Run benchmarks for current commit against base
           ASV_OPTIONS="--split --show-stderr --factor $ASV_FACTOR"