Update windows runner to windows-latest (#12)

Author: traversaro

.github/workflows/test-pixi.yaml

@@ -15,13 +15,13 @@ jobs:
           ubuntu-22.04,
           ubuntu-24.04-arm,
           macos-latest,
-          windows-2019
+          windows-latest
         ]
     steps:
     - uses: actions/checkout@v4
 
     - name: Set up pixi
-      uses: prefix-dev/setup-pixi@v0.8.1
+      uses: prefix-dev/setup-pixi@v0.8.14
 
     - name: Build and test the project
       run: pixi run test