Get the asv benchmarking job working again

.github/workflows/asv_check.yml

@@ -28,6 +28,18 @@ jobs:
       - name: Install asv
         run: pip install asv==0.4.2
 
+      # asv 0.4.2 (and more recent versions as well) creates conda envs
+      # using the --force option, which was removed in conda 24.3.
+      # Since ubuntu-latest now comes with conda 24.3 pre-installed,
+      # using the system's conda will result in error.
+      # To prevent that, we install an older version.
+      # TODO: remove this when we eventually upgrade our asv version.
+      # https://github.com/airspeed-velocity/asv/issues/1396
+      - name: Install Conda
+        uses: conda-incubator/setup-miniconda@v3
+        with:
+          conda-version: 24.1.2
+
       - name: Run asv benchmarks
         run: |
           cd benchmarks