[conda-lock] do not install pip post-facto and use it straight from the lock environment

[valeriupredoi]

…onment

Description

conda lock install tests failing prompted me to a vulnerability that should have been corrected long ago 👍 Instead of installing pip post-facto (after environment has been created) with the risk of overwriting the correctly installed version via conda lock, we just keep what came with the lock file.

Before you get started

• [ ] ☝ Create an issue to discuss what you are going to do

Checklist

• This pull request has a descriptive title and labels
• This pull request has a minimal description (most was discussed in the issue, but a two-liner description is still desirable)
• All tests pass

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (324c4ba) 86.95% compared to head (5d04ae4) 86.95%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #161   +/-   ##
=======================================
  Coverage   86.95%   86.95%           
=======================================
  Files           8        8           
  Lines         621      621           
=======================================
  Hits          540      540           
  Misses         81       81           

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[valeriupredoi]

S3Minio tests need fixing too, will do that in a separate PR 👍