Update dependabot.yml

Author: Gaardsholt

.github/dependabot.yml

@@ -8,12 +8,12 @@ updates:
   - package-ecosystem: "nuget" # See documentation for possible values
     directory: "/" # Location of package manifests
     schedule:
-      interval: "daily"
+      interval: "monthly"
     open-pull-requests-limit: 100
   - package-ecosystem: "docker" # See documentation for possible values
     directory: "/barcoder" # Location of package manifests
     schedule:
-      interval: "daily"
+      interval: "monthly"
     open-pull-requests-limit: 100