build(deps): bump astral-sh/setup-uv

Bumps the github-actions group with 1 update: [astral-sh/setup-uv](https://github.com/astral-sh/setup-uv).


Updates `astral-sh/setup-uv` from 10.2.0 to 10.3.0
- [Release notes](https://github.com/astral-sh/setup-uv/releases)
- [Commits](astral-sh/setup-uv@v10.2.0...1c37ad0)

---
updated-dependencies:
- dependency-name: astral-sh/setup-uv
  dependency-version: 10.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: github-actions
...

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

Author: dependabot[bot]

.github/workflows/downstream.yml

@@ -43,7 +43,7 @@ jobs:
             ${{ runner.temp }}/gix-target
           key: downstream-gix-${{ runner.os }}-${{ hashFiles('gix-requirements.txt') }}
       - name: Install uv
-        uses: astral-sh/setup-uv@c18668ad3cf93ea998bef934396af7bb5c839dc7 # v10.2.0
+        uses: astral-sh/setup-uv@1c37ad07a6a961277cf70c0d37d6f313000f5884 # v10.3.0
         with:
           version: '0.12.13'
           enable-cache: false