Merge pull request #5 from ItinerisLtd/dependencies/dependabot/composer-cooldown-21-days

Add 21-day cooldown to Dependabot composer updates

Author: codepuncher

.github/dependabot.yml

@@ -1,9 +1,10 @@
 version: 2
-
 updates:
   - package-ecosystem: composer
     directory: "/"
     schedule:
       interval: daily
       time: "00:00"
       timezone: Europe/London
+    cooldown:
+      default-days: 21