Merge pull request #1180 from NHSDigital/feature/made14-NRL-1922-dependabot-github-actions-cooldown

NRL-1922 Add dependabot cooldown for github action checks

Author: mattdean3-nhs

.github/dependabot.yml

@@ -20,3 +20,5 @@ updates:
     commit-message:
       prefix: "github-actions"
     open-pull-requests-limit: 10
+    cooldown:
+      default-days: 7