Bump prefix-dev/setup-pixi from 0.9.2 to 0.9.4

Bumps [prefix-dev/setup-pixi](https://github.com/prefix-dev/setup-pixi) from 0.9.2 to 0.9.4.
- [Release notes](https://github.com/prefix-dev/setup-pixi/releases)
- [Commits](prefix-dev/setup-pixi@v0.9.2...v0.9.4)

---
updated-dependencies:
- dependency-name: prefix-dev/setup-pixi
  dependency-version: 0.9.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

.github/workflows/extra.yml

@@ -48,7 +48,7 @@ jobs:
         - name: Checkout lockfile
           run: git lfs checkout
 
-        - uses: prefix-dev/setup-pixi@v0.9.2
+        - uses: prefix-dev/setup-pixi@v0.9.4
           with:
             pixi-version: v0.55.0
             cache: true