Update astral-sh/setup-uv action to v8 (#881)

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

Author: renovate[bot]

action.yml

@@ -28,7 +28,7 @@ runs:
       restore-keys: |
         andrewaylett/pre-commit-action/${{ hashFiles('.pre-commit-config.yaml') }}/
         andrewaylett/pre-commit-action/
-  - uses: astral-sh/setup-uv@37802adc94f370d6bfd71619e3f0bf239e1f3b78 # v7.6.0
+  - uses: astral-sh/setup-uv@cec208311dfd045dd5311c1add060b2062131d57 # v8.0.0
     id: uv
     with:
       enable-cache: false