PIN: template out py7zr version (bokulich-lab#247)

Author: lizgehret

conda-recipe/meta.yaml

@@ -16,7 +16,7 @@ requirements:
   - ncbi-datasets-pyclient {{ ncbi_datasets_pyclient }}
   - requests
   - xmltodict
-  - py7zr
+  - py7zr {{ py7zr }}
   - pandas {{ pandas }}
   - vsearch {{ vsearch }}
   - scikit-learn {{ scikit_learn }}