✨ Add cooldown to Dependabot updates (#6332)

One of the learnings from the latest supply chain attacks is, that parts of it can be mitigated by not updating asap.

This adds a cooldown settings to our Depndabot updates.

Signed-off-by: Christian Zunker <christian@mondoo.com>

Author: czunker

.github/dependabot.yml

@@ -5,7 +5,11 @@ updates:
     directory: /
     schedule:
       interval: weekly
+    cooldown:
+      default-days: 7
   - package-ecosystem: docker
     directory: /
     schedule:
       interval: weekly
+    cooldown:
+      default-days: 7