chore(deps): bump prefix-dev/setup-pixi from 0.8.3 to 0.8.4

Bumps [prefix-dev/setup-pixi](https://github.com/prefix-dev/setup-pixi) from 0.8.3 to 0.8.4.
- [Release notes](https://github.com/prefix-dev/setup-pixi/releases)
- [Commits](prefix-dev/setup-pixi@v0.8.3...v0.8.4)

---
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]>

Author: dependabot[bot]

.github/workflows/pr-sort.yml

@@ -31,7 +31,7 @@ jobs:
         token: ${{ secrets.GITHUB_TOKEN }}
 
     - name: Setup Pixi
-      uses: prefix-dev/[email protected].3
+      uses: prefix-dev/[email protected].4
 
     - name: Set variables
       id: vars

.github/workflows/recurring-sort.yml

@@ -21,7 +21,7 @@ jobs:
       uses: actions/checkout@v4
 
     - name: Setup Pixi
-      uses: prefix-dev/[email protected].3
+      uses: prefix-dev/[email protected].4
 
     - name: Run links command
       run: pixi run sort