ci: update documentation workflow to Python 3.14

Update docs.yml workflow to install Python 3.14 via uv.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: JacobCoffee

.github/workflows/docs.yml

@@ -24,7 +24,7 @@ jobs:
         uses: astral-sh/setup-uv@v3
 
       - name: Set up Python
-        run: uv python install 3.12
+        run: uv python install 3.14
 
       - name: Install dependencies
         run: uv sync --all-extras --dev