Avoid warning that pip should be explicitly listed

Tobias-Fischer · Tobias-Fischer · commit c5e1c90e710d · 2023-05-24T10:41:42.000+10:00
diff --git a/environment.yml b/environment.yml
@@ -3,6 +3,7 @@ channels:
 - conda-forge
 dependencies:
   - mkdocs-material
+  - pip
   - pip:
     - mkdocs-redirects
     - mkdocs-minify-plugin
