Debug GitHub Actions workflow

.github/workflows/documentation.yml

@@ -46,13 +46,11 @@ jobs:
 
       - name: Install Python dependencies
         run: |
-          pip install .
-          pip install \
+          pip install . \
             mkdocs-git-committers-plugin-2>=0.4 \
             mkdocs-git-revision-date-plugin>=0.3 \
             mkdocs-minify-plugin>=0.3 \
-            mkdocs-redirects>=1.0 \
-            mkdocs-rss-plugin>=0.17
+            mkdocs-redirects>=1.0
 
       - name: Install Insiders build
         if: github.event.repository.fork == false