Update ci.yml

Author: stevsmit

.github/workflows/ci.yml

@@ -19,6 +19,5 @@ jobs:
           key: ${{ github.ref }}
           path: .cache
       - run: pip install mkdocs-material
-      - run: pip install mkdocs-render-swagger-plugin
-      - run: pip install pillow cairosvg
+      - run: pip install mkdocs-swagger-ui-tag
       - run: mkdocs gh-deploy --force