chore(deps): update astral-sh/setup-uv action to v6.4.0 (#1145)

Co-authored-by: grafanarenovatebot[bot] <146220760+grafanarenovatebot[bot]@users.noreply.github.com>

Author: grafanarenovatebot[bot]

.github/workflows/reusable-zizmor.yml

@@ -361,7 +361,7 @@ jobs:
           fi
 
       - name: Setup UV
-        uses: astral-sh/setup-uv@bd01e18f51369d5a26f1651c3cb451d3417e3bba # v6.3.1
+        uses: astral-sh/setup-uv@05273c154d09957eb9a2377d9c988fbda431d1c5 # v6.4.0
         with:
           enable-cache: true
           activate-environment: true