Updates Dependabot's schedule

Author: zgosalvez

.github/dependabot.yml

@@ -3,11 +3,21 @@ updates:
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
-      interval: "weekly"
-      day: "friday"
+      interval: "monthly"
+      day: "saturday"
+
+  - package-ecosystem: "npm"
+    directory: "/"
+    schedule:
+      interval: "monthly"
+      day: "saturday"
+    allow:
+      - dependency-type: "development"
 
   - package-ecosystem: "npm"
     directory: "/"
     schedule:
       interval: "weekly"
-      day: "friday"
+      day: "saturday"
+    allow:
+      - dependency-type: "production"