Bump the dependencies group with 2 updates (#101)

Bumps the dependencies group with 2 updates: [actions/checkout](https://github.com/actions/checkout) and [prefix-dev/setup-pixi](https://github.com/prefix-dev/setup-pixi).


Updates `actions/checkout` from 6 to 6.0.2
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v6...v6.0.2)

Updates `prefix-dev/setup-pixi` from 0.9.5 to 0.9.6
- [Release notes](https://github.com/prefix-dev/setup-pixi/releases)
- [Commits](prefix-dev/setup-pixi@v0.9.5...v0.9.6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: 6.0.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dependencies
- dependency-name: prefix-dev/setup-pixi
  dependency-version: 0.9.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dependencies
...

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

Author: dependabot[bot]

.github/workflows/ci.yaml

@@ -28,10 +28,10 @@ jobs:
           - py313
 
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v6.0.2
 
     - name: Set up virtual environment
-      uses: prefix-dev/setup-pixi@v0.9.5
+      uses: prefix-dev/setup-pixi@v0.9.6
       with:
         pixi-version: v0.62.2
         environments: ${{ matrix.environment }}