chore: Bump github/gh-aw-actions/setup-cli from 0.89.7 to 0.89.21

Bumps [github/gh-aw-actions/setup-cli](https://github.com/github/gh-aw-actions) from 0.89.7 to 0.89.21.
- [Release notes](https://github.com/github/gh-aw-actions/releases)
- [Changelog](https://github.com/github/gh-aw-actions/blob/main/CHANGELOG.md)
- [Commits](github/gh-aw-actions@c9a9164...924af5f)

---
updated-dependencies:
- dependency-name: github/gh-aw-actions/setup-cli
  dependency-version: 0.89.21
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

.github/workflows/copilot-setup-steps.yml

@@ -21,6 +21,6 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v7.0.1
       - name: Install gh-aw extension
-        uses: github/gh-aw-actions/setup-cli@c9a91649fa6263a455ef783f7c06a96940052fec # v0.89.7
+        uses: github/gh-aw-actions/setup-cli@924af5fdc64061cfbf66fb584c8b07e2ac230c60 # v0.89.21
         with:
           version: v0.71.5