Update dependabot cadence to monthly

Author: bjester

.github/dependabot.yml

@@ -1,22 +1,19 @@
 # Keeps dependencies up to date
-
 version: 2
 updates:
   # Maintain dependencies for Python
   - package-ecosystem: "uv"
     directory: "/"
     schedule:
-      interval: "weekly"
-      day: "friday"
+      interval: "monthly"
       time: "00:00"
     cooldown:
       default-days: 7
   # Maintain dependencies for Github Actions
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
-      interval: "weekly"
-      day: "friday"
+      interval: "monthly"
       time: "00:00"
     groups:
       github: