chore: Use temp location for pixi

Author: lewisjared

.github/actions/setup/action.yml

@@ -4,9 +4,11 @@ runs:
   using: "composite"
   steps:
     - name: Install pixi
-      uses: prefix-dev/setup-pixi@v0.8.11
+      uses: prefix-dev/setup-pixi@v0.9.1
       with:
         pixi-version: "v0.54.0"
         cache: false # The self-hosted runners have a local cache
         locked: true
         log-level: "v"
+        post-cleanup: true
+        pixi-bin-path: ${{ runner.temp }}/bin/pixi