Pin numcodecs>=0.12 to avoid compression kerfuffle for Python<3.12

[valeriupredoi]

Description

Closes #162

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)
• [ ] Unit tests have been added (if codecov test fails)
• Any changed dependencies have been added or removed correctly (if need be)
• All tests pass

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (bcf9e4b) 86.95% compared to head (4e0e36b) 86.95%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #163   +/-   ##
=======================================
  Coverage   86.95%   86.95%           
=======================================
  Files           8        8           
  Lines         621      621           
=======================================
  Hits          540      540           
  Misses         81       81           

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