Bump the github-actions group with 2 updates

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


Updates `actions/checkout` from 4 to 5
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...v5)

Updates `prefix-dev/setup-pixi` from 0.8.14 to 0.9.0
- [Release notes](https://github.com/prefix-dev/setup-pixi/releases)
- [Commits](prefix-dev/setup-pixi@v0.8.14...v0.9.0)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
- dependency-name: prefix-dev/setup-pixi
  dependency-version: 0.9.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: github-actions
...

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

Author: dependabot[bot]

.github/workflows/main.yaml

@@ -37,8 +37,8 @@ jobs:
           - os: windows-latest
             environment: py312
     steps:
-      - uses: actions/checkout@v4
-      - uses: prefix-dev/setup-pixi@v0.8.14
+      - uses: actions/checkout@v5
+      - uses: prefix-dev/setup-pixi@v0.9.0
         with:
           pixi-version: v0.50.1
           cache: true

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

@@ -8,7 +8,7 @@ jobs:
     permissions:
       id-token: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Set up Python 3.12
         uses: actions/setup-python@v5
         with: