Bump the dependencies group with 2 updates

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


Updates `actions/cache` from 3 to 4
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v3...v4)

Updates `prefix-dev/setup-pixi` from 0.4.1 to 0.5.0
- [Release notes](https://github.com/prefix-dev/setup-pixi/releases)
- [Commits](prefix-dev/setup-pixi@v0.4.1...v0.5.0)

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

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

.github/workflows/benchmark.yml

@@ -23,7 +23,7 @@ jobs:
         run: python -m pip install --no-build-isolation --no-deps --disable-pip-version-check -e .
         shell: bash -el {0}
       - name: Cache models
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         env:
           cache-name: benchmark-model-cache
         with:

.github/workflows/ci.yml

@@ -67,7 +67,7 @@ jobs:
       fail-fast: false
     steps:
       - uses: actions/checkout@v4
-      - uses: prefix-dev/setup-pixi@v0.4.1
+      - uses: prefix-dev/setup-pixi@v0.5.0
       - name: Install environment
         run: |
           pixi run postinstall