Merge pull request #2327 from gitbutlerapp/update-schedule-to-weekly

revert cargo dependabot updates back to weekly and use groups instead

.github/dependabot.yml

@@ -13,4 +13,11 @@ updates:
   - package-ecosystem: "cargo"
     directory: "/"
     schedule:
-      interval: "monthly"
+      interval: "weekly"
+    groups:
+      major:
+        update-types: [major]
+      minor:
+        update-types: [minor]
+      patch:
+        update-types: [patch]