chore(ci): bump prefix-dev/setup-pixi from 0.9.0 to 0.9.1 (#177)

Bumps [prefix-dev/setup-pixi](https://github.com/prefix-dev/setup-pixi) from 0.9.0 to 0.9.1.
- [Release notes](https://github.com/prefix-dev/setup-pixi/releases)
- [Commits](prefix-dev/setup-pixi@v0.9.0...v0.9.1)

---
updated-dependencies:
- dependency-name: prefix-dev/setup-pixi
  dependency-version: 0.9.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

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/[email protected].0
+      - uses: prefix-dev/[email protected].1
         with:
           environments: format-cpp
 
@@ -39,7 +39,7 @@ jobs:
       - name: Checkout source code
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v4
 
-      - uses: prefix-dev/[email protected].0
+      - uses: prefix-dev/[email protected].1
         with:
           environments: test-cpp