Merge pull request #22 from alphagov/BAU-Enable-dependabot-for-GitHub-Actions

BAU - Enable dependabot for GitHub Actions

Author: nimalank7

.github/dependabot.yml

@@ -13,4 +13,10 @@ updates:
       interval: daily
     cooldown:
       default-days: 10
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: weekly
+    cooldown:
+      default-days: 10
 ...