chore(deps): update astral-sh/setup-uv action to v9 (#195)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/ci-flatpak.yml

@@ -46,7 +46,7 @@ jobs:
           python-version: ${{ env.PYTHON_VERSION }}
 
       - name: Setup uv
-        uses: astral-sh/setup-uv@11f9893b081a58869d3b5fccaea48c9e9e46f990  # v8.3.2
+        uses: astral-sh/setup-uv@c771a70e6277c0a99b617c7a806ffedaca235ff9  # v9.0.0
         with:
           enable-cache: true