caching environment for test routine

[KatieBuc]

Reference Issues/PRs

Addressing issue #24, uses a cashed conda environment

What does this implement/fix? Explain your changes.

Following the example documentation given here: https://github.com/marketplace/actions/setup-miniconda

The steps are:

• setup a Miniconda variant
• adds current date to the cache key (refreshes cache every 24 hours)
• if the cache does not exist, update the environment based on the environment file

Does your contribution introduce a new dependency? If yes, which one?

"conda (and mamba) resolves the dependencies declared in the YAML file according to the packages available on the channels at installation time. Since packages are updated all the time, you will not see these changes reflected in the cache until the key gets updated by date.

This means that the same environment file can make your tests pass locally but fail on CI, or the other way around. In that case, reset the cache manually to see if that leads to consistent results, or use a resolved environment file."

[codecov-commenter]

Codecov Report

Merging #33 (fe4d4cb) into main (27ca157) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #33   +/-   ##
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  Coverage   58.23%   58.23%           
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  Files          18       18           
  Lines        1463     1463           
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  Hits          852      852           
  Misses        611      611           

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[fkiraly]

superseded by new GHA setup