MAINT: add env file for QIIME 2 2026.1

[misialq]

This PR adds a new environment file for QIIME 2 2026.1.

Generated from the latest env file in 'environment-files/' by updating the release token.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.04%. Comparing base (a2e329a) to head (3aa8444).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #11   +/-   ##
=======================================
  Coverage   97.04%   97.04%           
=======================================
  Files          10       10           
  Lines         508      508           
=======================================
  Hits          493      493           
  Misses         15       15           

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