Fix version of .NET Framework in WinForms

Author: Deadpikle

src/NetSparkle.UI.WinForms.NetFramework/NetSparkle.UI.WinForms.NetFramework.csproj

@@ -9,7 +9,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>NetSparkleUpdater.UI.WinForms</RootNamespace>
     <AssemblyName>NetSparkleUpdater.UI.WinForms</AssemblyName>
-    <TargetFrameworkVersion>v4.5.2</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.6.2</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <Deterministic>true</Deterministic>
     <TargetFrameworkProfile />