update gha

.github/workflows/gh-page-ci.yml

@@ -26,5 +26,5 @@ jobs:
           path: .cache
           restore-keys: |
             mkdocs-material-
-      - run: pip install mkdocs-material[recommended, imaging] mkdocstrings-python cairosvg pillow mkdocs-gen-files mkdocs-literate-nav mkdocs-section-index
+      - run: pip install mkdocs-material[imaging] mkdocstrings-python cairosvg pillow mkdocs-gen-files mkdocs-literate-nav mkdocs-section-index
       - run: mkdocs gh-deploy --force