Add dependabot config

Author: oalders

.github/dependabot.yml

@@ -0,0 +1,12 @@
+---
+version: 2
+updates:
+  - package-ecosystem: 'github-actions'
+    directory: '/'
+    schedule:
+      # Check for updates to GitHub Actions every week
+      interval: 'weekly'
+  - package-ecosystem: npm
+    directory: '/'
+    schedule:
+      interval: 'weekly'