Update dependabot.yml (#1481)

Author: WilliamBergamin

.github/dependabot.yml

@@ -6,7 +6,7 @@ updates:
   - package-ecosystem: "pip"
     directory: "/"
     schedule:
-      interval: "weekly"
+      interval: "monthly"
     open-pull-requests-limit: 5
   - package-ecosystem: "github-actions"
     directory: "/"