chore(ci): bump prefix-dev/setup-pixi from 0.8.1 to 0.8.2

Bumps [prefix-dev/setup-pixi](https://github.com/prefix-dev/setup-pixi) from 0.8.1 to 0.8.2.
- [Release notes](https://github.com/prefix-dev/setup-pixi/releases)
- [Commits](prefix-dev/setup-pixi@v0.8.1...v0.8.2)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/cpp-test.yml

@@ -18,7 +18,7 @@ jobs:
       - name: Checkout source code
         uses: actions/checkout@v4
 
-      - uses: prefix-dev/setup-pixi@v0.8.1
+      - uses: prefix-dev/setup-pixi@v0.8.2
         with:
           environments: format-cpp
 
@@ -39,7 +39,7 @@ jobs:
       - name: Checkout source code
         uses: actions/checkout@v4
 
-      - uses: prefix-dev/setup-pixi@v0.8.1
+      - uses: prefix-dev/setup-pixi@v0.8.2
         with:
           environments: test-cpp