Use latest pixi

Author: dgovil

.github/workflows/build_docs.yml

@@ -15,7 +15,7 @@ jobs:
       - name: Setup Pixi
         uses: prefix-dev/[email protected]
         with:
-          pixi-version: v0.48.1
+          pixi-version: v0.59.0
       - name: Install DejaVu fonts
         run: |
           sudo apt-get update