ci: bump astral-sh/setup-uv from 7.3.0 to 7.6.0

Bumps [astral-sh/setup-uv](https://github.com/astral-sh/setup-uv) from 7.3.0 to 7.6.0.
- [Release notes](https://github.com/astral-sh/setup-uv/releases)
- [Commits](astral-sh/setup-uv@eac588a...37802ad)

---
updated-dependencies:
- dependency-name: astral-sh/setup-uv
  dependency-version: 7.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/main.yml

@@ -188,7 +188,7 @@ jobs:
                   python3-pip \
                   libxkbcommon-dev
       - name: Install uv
-        uses: astral-sh/setup-uv@eac588ad8def6316056a12d4907a9d4d84ff7a3b # v6
+        uses: astral-sh/setup-uv@37802adc94f370d6bfd71619e3f0bf239e1f3b78 # v6
         with:
           python-version: "3.9"
           activate-environment: true