pin blas packages

2 jobs for netlib-blas in 7 minutes and 12 seconds (queued for 9 seconds)
Name Stage Failure
build_macos_intel_38 Build
    raise subprocess.CalledProcessError(proc.returncode, _args)
subprocess.CalledProcessError: Command '['/bin/bash', '-o', 'errexit', '/Users/gitlab/builds/nrU4yQP1/0/bob/bob.math/miniconda/conda-bld/bob.math_1633523489470/work/']' returned non-zero exit status 1.
Uploading artifacts for failed job
Uploading artifacts...
Runtime platform
arch=amd64 os=darwin pid=7285 revision=e0218c92 version=14.3.2
WARNING: coverage.xml: no matching files
ERROR: No files to upload
Cleaning up project directory and file based variables
ERROR: Job failed: exit status 1