Bump prefix-dev/setup-pixi from 0.8.10 to 0.8.11 (PDAL#4762)

Bumps [prefix-dev/setup-pixi](https://github.com/prefix-dev/setup-pixi) from 0.8.10 to 0.8.11.
- [Release notes](https://github.com/prefix-dev/setup-pixi/releases)
- [Commits](prefix-dev/setup-pixi@v0.8.10...v0.8.11)

---
updated-dependencies:
- dependency-name: prefix-dev/setup-pixi
  dependency-version: 0.8.11
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/pixi.yml

@@ -24,7 +24,7 @@ jobs:
       fail-fast: false
     steps:
     - uses: actions/checkout@v4
-    - uses: prefix-dev/setup-pixi@v0.8.10
+    - uses: prefix-dev/setup-pixi@v0.8.11
       with:
         environments: >-
           dev