Update ci.yml

Author: stevsmit

.github/workflows/ci.yml

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