Update to .NET 8 RC2

NuGet.config

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+    <packageSources>
+        <add key="Npgsql-nightly" value="https://www.myget.org/F/npgsql-vnext/api/v3/index.json" />
+        <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />
+    </packageSources>
+</configuration>

package-versions.props

@@ -26,9 +26,9 @@
     <EntityFrameworkCoreFrozenVersion>8.0.0-rc.1.*</EntityFrameworkCoreFrozenVersion>
 
     <!-- Non-published dependencies (these are safe to update, won't cause a breaking change) -->
-    <AspNetCoreVersion>8.0.0-rc.1.*</AspNetCoreVersion>
-    <EntityFrameworkCoreVersion>8.0.0-rc.1.*</EntityFrameworkCoreVersion>
-    <NpgsqlVersion>8.0.0-rc.1</NpgsqlVersion>
+    <AspNetCoreVersion>8.0.0-rc.2.*</AspNetCoreVersion>
+    <EntityFrameworkCoreVersion>8.0.0-rc.2.*</EntityFrameworkCoreVersion>
+    <NpgsqlVersion>8.0.0-rc.2</NpgsqlVersion>
     <SystemTextJsonVersion>$(AspNetCoreVersion)</SystemTextJsonVersion>
   </PropertyGroup>
 

test/TestBuildingBlocks/TestBuildingBlocks.csproj

@@ -17,6 +17,7 @@
     <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="$(AspNetCoreVersion)" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Relational" Version="$(EntityFrameworkCoreVersion)" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="$(TestSdkVersion)" />
+    <PackageReference Include="Npgsql" Condition="'$(TargetFramework)' == 'net8.0'" Version="8.0.0-rtm-ci.20231012T145719" />
     <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="$(NpgsqlVersion)" />
     <PackageReference Include="xunit" Version="$(XunitVersion)" />
     <PackageReference Include="xunit.runner.visualstudio" Version="$(XunitVersion)" PrivateAssets="All" />