Add mkdocs-redirects to ci/environment-dev.yml for "reasons"

ci/environment-dev.yml

@@ -14,6 +14,7 @@ dependencies:
   - mkdocs>=1.2
   - mkdocs-material>=7.1,<9.0
   - markdown-include>=0.6
+  - mkdocs-redirects>=1.2.1
   - mkdocstrings>=0.19.0
   - mkdocstrings-python
   - mkdocs-jupyter>=0.19.0