build: Enable dependabot for docker and gomod

Signed-off-by: Paulo Gomes <[email protected]>

Author: pjbgf

.github/dependabot.yml

@@ -1,7 +1,15 @@
 version: 2
 
 updates:
-  - package-ecosystem: "github-actions"
+  - package-ecosystem: github-actions
     directory: "/"
     schedule:
-      interval: "weekly"
+      interval: weekly
+  - package-ecosystem: docker
+    directory: "/"
+    schedule:
+      interval: weekly
+  - package-ecosystem: gomod
+    directory: "/"
+    schedule:
+      interval: weekly