chore: fix dependabot.yml

Co-Authored-By: Yufei Huang <yufeih@live.com>

Author: filzrev

.github/dependabot.yml

@@ -5,6 +5,8 @@ updates:
   directory: "/"
   schedule:
     interval: daily
+  ignore:
+    - dependency-name: "Verify.*"
   groups:
     roslyn:
       patterns:
@@ -21,14 +23,6 @@ updates:
       - "xunit.v3"
       - "xunit.v3.*"
 
-  - package-ecosystem: "nuget"
-    target-branch: main
-    directory: "/"
-    schedule:
-      interval: "monthly"
-    allow:
-      - dependency-name: "Verify.*"
-
 - package-ecosystem: npm
   target-branch: main
   directory: "/templates"