build(deps): bump prefix-dev/setup-pixi from 0.4.1 to 0.4.3 (#86)

Bumps [prefix-dev/setup-pixi](https://github.com/prefix-dev/setup-pixi) from 0.4.1 to 0.4.3.
- [Release notes](https://github.com/prefix-dev/setup-pixi/releases)
- [Commits](prefix-dev/setup-pixi@v0.4.1...v0.4.3)

---
updated-dependencies:
- dependency-name: prefix-dev/setup-pixi
  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>

.github/workflows/tests.yaml

@@ -18,7 +18,7 @@ jobs:
       uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
-    - uses: prefix-dev/[email protected].1
+    - uses: prefix-dev/[email protected].3
       with:
           run-install: true
     - name: Post-install dependencies