remove mamba from build_wheels

Author: Mark Wieczorek

.github/workflows/build_wheels.yml

@@ -86,7 +86,6 @@ jobs:
         uses: conda-incubator/setup-miniconda@v3
         with:
           python-version: 3.12
-          mamba-version: "*"
           channels: conda-forge
           channel-priority: strict
           auto-update-conda: true