Bump the dependencies group with 2 updates

Bumps the dependencies 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 5 to 6
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v5...v6)

Updates `prefix-dev/setup-pixi` from 0.9.2 to 0.9.3
- [Release notes](https://github.com/prefix-dev/setup-pixi/releases)
- [Commits](prefix-dev/setup-pixi@v0.9.2...v0.9.3)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: dependencies
- dependency-name: prefix-dev/setup-pixi
  dependency-version: 0.9.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dependencies
...

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

Author: dependabot[bot]

.github/workflows/main.yml

@@ -13,7 +13,7 @@ jobs:
       pages: write
       id-token: write
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: ./
         with:
           input: test

action.yml

@@ -28,9 +28,9 @@ inputs:
 runs:
   using: "composite"
   steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: Install pixi
-      uses: prefix-dev/setup-pixi@v0.9.2
+      uses: prefix-dev/setup-pixi@v0.9.3
       with:
         pixi-version: ${{ inputs.pixi_version }}
         cache: false