chore: Add cooldown to dependabot

Author: effigies

.github/dependabot.yml

@@ -8,6 +8,8 @@ updates:
       actions-infrastructure:
         patterns:
           - "actions/*"
+    cooldown:
+      default-days: 14
   - package-ecosystem: uv
     directory: "/"
     labels: ["dependencies"]
@@ -17,3 +19,5 @@ updates:
       python:
         patterns:
           - "*"
+    cooldown:
+      default-days: 14