Add astral-sh/setup-uv v7.0.0

Requireed by apache#350
See https://github.com/helm/chart-testing-action/blob/v2.8.0/action.yml

Author: snazy

actions.yml

@@ -15,6 +15,9 @@ astral-sh/setup-uv:
   b75a909f75acd358c2196fb9a5f1299a9a8868a4:
     tag: v6.7.0
     expires_at: 2026-01-26
+  eb1897b8dc4b5d5bfe39a428a8f2304605e0983c:
+    expires_at: 2026-12-31
+    tag: v7.0.0
   85856786d1ce8acfbcc2f13a5f3fbd6b938f9f41:
     expires_at: 2050-01-01
     tag: v7.1.2