Allow .csproj files for Dependabot updates

Removed exclusion of .csproj files from Dependabot updates.

Author: timunie

.github/dependabot.yml

@@ -7,8 +7,6 @@ version: 2
 updates:
   - package-ecosystem: nuget
     directory: "/src/Avalonia.Samples/"
-    exclude-paths:
-      - "*.csproj"
     schedule:
       interval: "daily"
     groups: