Bump prefix-dev/setup-pixi in the actions group across 1 directory

Bumps the actions group with 1 update in the / directory: [prefix-dev/setup-pixi](https://github.com/prefix-dev/setup-pixi).


Updates `prefix-dev/setup-pixi` from 0.8.1 to 0.8.3
- [Release notes](https://github.com/prefix-dev/setup-pixi/releases)
- [Commits](prefix-dev/setup-pixi@v0.8.1...v0.8.3)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/cd.yml

@@ -27,7 +27,7 @@ jobs:
         uses: actions/configure-pages@v5
 
       - name: Setup pixi
-        uses: prefix-dev/[email protected].1
+        uses: prefix-dev/[email protected].8
         with:
           cache: true
           cache-write: ${{ github.event_name == 'push' && github.ref_name == 'main' }}
@@ -87,7 +87,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Setup pixi
-        uses: prefix-dev/[email protected].1
+        uses: prefix-dev/[email protected].8
 
       - name: Publish ipynb-formatted variant to 'notebooks' branch of this repo
         run: |

.github/workflows/ci.yml

@@ -21,7 +21,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Setup pixi
-        uses: prefix-dev/[email protected].1
+        uses: prefix-dev/[email protected].8
 
       - name: Test all files
         run: pixi run ./test.sh --all