least squares: relax test tolerance #809
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Problem:
1.0e-6is too tight a tolerance for least squares on some systems (1.0e-6 << sqrt(epsilon(0.0)))Example: failed CI job
https://github.com/fortran-lang/stdlib/actions/runs/9015259889/job/24769521465
Solution:
relax tolerance to
1.0e-4cc: @jvdp1 @jalvesz