pipeline updated net9

Author: Sergei Calabonga

.github/workflows/main.yml

@@ -1,4 +1,4 @@
-name: .NET Core
+name: Nuget Package (NET9)
 
 on:
   push:
@@ -18,7 +18,7 @@ jobs:
       - name: Set up .NET Core
         uses: actions/setup-dotnet@v2
         with:
-          dotnet-version: 8.0.x
+          dotnet-version: 9.0.x
 
       - name: Install dependencies
         run: dotnet restore src/Calabonga.AspNetCore.AppDefinitions.sln