ci: fix docs generation

.github/workflows/publish-docs.yml

@@ -17,13 +17,14 @@ jobs:
         uses: actions/checkout@v3
         with:
           fetch-depth: 0
-      - name: Install mkdocs
+      - name: Setup python
         uses: actions/setup-python@v4
         with:
           python-version: '3.10'
           cache: 'pip'
           cache-dependency-path: |
             docs-requirements.txt
+      - name: Install mkdocs
         run: |
           pip install -r docs-requirements.txt
       - name: Generate docs