chore: dependabot config

.github/dependabot.yml

@@ -0,0 +1,14 @@
+version: 2
+
+updates:
+  - package-ecosystem: 'npm'
+    schedule:
+      interval: 'weekly'
+      # Check for npm updates on Sundays
+      day: 'sunday'
+    # Raise pull requests for version updates
+    # to pip against the `develop` branch
+    target-branch: 'develop'
+    # Labels on pull requests for security and version updates
+    labels:
+      - 'npm dependencies'