ci: add dependabot config

Author: danielknell

.github/dependabot.yml

@@ -0,0 +1,18 @@
+version: 2
+
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+    reviewers:
+      - "artisanofcode/core"
+      
+  - package-ecosystem: "pip"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+    reviewers:
+      - "artisanofcode/core"