Update dependabot.yml to fix refactoring error (#8)

Author: Jekannadar

.github/dependabot.yml

@@ -1,6 +1,6 @@
 version: 2
 updates:
-  - package-ecosy-luigistem: "github-actions"
+  - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
       interval: "monthly"