chore: Add dependabot for docker and github actions

.github/dependabot.yml

@@ -0,0 +1,10 @@
+version: 2
+updates:
+  - package-ecosystem: "docker"
+    directory: "/docker"
+    schedule:
+      interval: "weekly"
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: "weekly"