[dependabot.yml] Enable for github actions

- Reduce frequency of npm updates from daily to weekly

Author: mikeharder

.github/dependabot.yml

@@ -1,9 +1,15 @@
 version: 2
 updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    cooldown:
+      default-days: 7
   - package-ecosystem: "npm"
     directory: "/"
     schedule:
-      interval: "daily"
+      interval: "weekly"
     cooldown:
       default-days: 7
     ignore: