Bump prefix-dev/setup-pixi from 0.9.0 to 0.9.1 in the dependencies group

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


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@fef5c95...194d461)

---
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: dependencies
...

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

Author: dependabot[bot]

.github/workflows/ci-copier.yml

@@ -21,6 +21,6 @@ jobs:
         with:
           fetch-depth: 0 # copier doesn't like shallow clones
       - name: Set up pixi
-        uses: prefix-dev/setup-pixi@fef5c9568ca6c4ff7707bf840ab0692ba3f08293 # v0.9.0
+        uses: prefix-dev/setup-pixi@194d461b21b6c5717c722ffc597fa91ed2ff29fa # v0.9.1
       - name: Test
         run: pixi run test