Take 5 at solving sphinx workflow issue

Author: ksiegall

.github/workflows/sphinx.yml

@@ -8,9 +8,11 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-python@v3
-      - name: Install dependencies
+      - name: Install Sphinx theme
         run: |
           pip install sphinx sphinx_rtd_theme
+      - name: Install mock imports
+        run: |
           pip install micropython-uctypes
       - name: Sphinx build
         run: |