Upgrade to .NET 10 (#26)

Upgrade test project and GitHub workflows to .NET 10

Author: gustavo-frizzo

.github/workflows/dotnet-build-and-tests.yml

@@ -10,7 +10,7 @@ jobs:
     strategy:
       matrix:
         operating-system: [ubuntu-latest]
-        dotnet-version: ['8.0.x']
+        dotnet-version: ['10.0.x']
 
     steps:
       - uses: actions/checkout@v4

Src/CreditCardValidator.Tests/CreditCardValidator.Tests.csproj

@@ -1,13 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net10.0</TargetFramework>
 
     <IsPackable>false</IsPackable>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
     <PackageReference Include="Shouldly" Version="4.3.0" />
     <PackageReference Include="xunit" Version="2.7.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.7">