downgrade CPU runner size

Author: h-vetinari

recipe/conda_build_config.yaml

@@ -27,7 +27,7 @@ blas_impl:
 
 # https://github.com/conda-forge/.cirun
 github_actions_labels:
-- cirun-openstack-cpu-2xlarge   # [linux]
+- cirun-openstack-cpu-xlarge    # [linux]
 - cirun-openstack-gpu-2xlarge   # [linux]
 - cirun-macos-m4-large          # [osx]
 - cirun-azure-windows-4xlarge   # [win]