Add dependabot cooldown (#442)

# What is the change?

Add 7 day cooldown period on dependabot

# Why are we making this change?

To ensure a cooldown to prevent security vulnberabilities

Author: Themitchell

.github/dependabot.yaml

@@ -6,23 +6,33 @@ updates:
     directory: "/"
     schedule:
       interval: "daily"
+    cooldown:
+      default-days: 7
 
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
       interval: "daily"
+    cooldown:
+      default-days: 7
 
   - package-ecosystem: "npm"
     directory: "/"
     schedule:
       interval: "daily"
+    cooldown:
+      default-days: 7
 
   - package-ecosystem: "pip"
     directory: "/"
     schedule:
       interval: "daily"
+    cooldown:
+      default-days: 7
 
   - package-ecosystem: "terraform"
     directory: "/"
     schedule:
       interval: "daily"
+    cooldown:
+      default-days: 7