Bump the github-actions group with 2 updates

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


Updates `prefix-dev/setup-pixi` from 0.9.0 to 0.9.1
- [Release notes](https://github.com/prefix-dev/setup-pixi/releases)
- [Commits](prefix-dev/setup-pixi@v0.9.0...v0.9.1)

Updates `actions/setup-python` from 5 to 6
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](actions/setup-python@v5...v6)

---
updated-dependencies:
- dependency-name: prefix-dev/setup-pixi
  dependency-version: 0.9.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: github-actions
- dependency-name: actions/setup-python
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
...

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

Author: dependabot[bot]

.github/workflows/main.yaml

@@ -38,7 +38,7 @@ jobs:
             environment: py312
     steps:
       - uses: actions/checkout@v5
-      - uses: prefix-dev/[email protected].0
+      - uses: prefix-dev/[email protected].1
         with:
           pixi-version: v0.50.1
           cache: true

.github/workflows/publish-to-pypi.yaml

@@ -10,7 +10,7 @@ jobs:
     steps:
       - uses: actions/checkout@v5
       - name: Set up Python 3.12
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: '3.12'
       - name: Install pypa/build