Disable dependabot for nuget packages

Author: dnperfors

.github/dependabot.yaml

@@ -1,15 +1,5 @@
 version: 2
 updates:
-- package-ecosystem: "nuget"
-  directory: "/"
-  groups:
-    all-dependencies:
-      patterns:
-      - "*"
-  schedule:
-    interval: "daily"
-  reviewers:
-  - "dnperfors"
 - package-ecosystem: "github-actions"
   directory: "/"
   schedule:

CHANGELOG.md

@@ -8,6 +8,7 @@ this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 ### Removed
 - .NET 6.0 target, since it is no longer supported
 - .NET Framework 4.6.2, 4.7.0 and 4.7.2, since these can't be tested using xUnit v3
+- automatic nuget updates by dependabot, since we want to test against the lowest supported nuget version and most of the time dependabot does not choose the right package.
 ### Added
 - Support for .NET 9.0
 - support for .NET 10.0