Update the min pin of cf_units to 2.1.5

lbdreyer commented 3 years ago

I ran into an issue where I was creating an env with iris 3.0.2 and cf_units 2.1.3 and it was failing. I thought we should add a min pin Checklist

[x] Used a personal fork of the feedstock to propose changes
[x] Bumped the build number (if the version is unchanged)
~[ ] Reset the build number to 0 (if the version changed)~
[x] Re-rendered with the latest conda-smithy (Use the phrase code>@<space/conda-forge-admin, please rerender in a comment in this PR for automated rerendering)
[x] Ensured the license file is being packaged.

conda-forge-linter commented 3 years ago

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

lbdreyer commented 3 years ago

@conda-forge-admin, please rerender

conda-forge / iris-feedstock