chore(ci): bump prefix-dev/setup-pixi from 0.8.14 to 0.9.0 (#170)

Author: dependabot[bot]

.github/workflows/cpp-test.yml

@@ -18,7 +18,7 @@ jobs:
       - name: Checkout source code
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v4
 
-      - uses: prefix-dev/setup-pixi@v0.8.14
+      - uses: prefix-dev/setup-pixi@v0.9.0
         with:
           environments: format-cpp
 
@@ -39,7 +39,7 @@ jobs:
       - name: Checkout source code
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v4
 
-      - uses: prefix-dev/setup-pixi@v0.8.14
+      - uses: prefix-dev/setup-pixi@v0.9.0
         with:
           environments: test-cpp