Update to .NET 8

It has much better scaffolding capabilities for SQLite since dotnet/efcore#30816

global.json

@@ -1,7 +1,7 @@
 {
   "$schema": "https://json.schemastore.org/global",
   "sdk": {
-    "version": "7.0.400",
+    "version": "8.0.100",
     "allowPrerelease": false,
     "rollForward": "latestFeature"
   }

src/CompatibilitySuppressions.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- https://learn.microsoft.com/en-us/dotnet/fundamentals/package-validation/diagnostic-ids -->
+<Suppressions xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
+  <Suppression>
+    <DiagnosticId>PKV006</DiagnosticId>
+    <Target>net6.0</Target>
+  </Suppression>
+</Suppressions>

src/EFCore.Scaffolding.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
   </PropertyGroup>
 
   <PropertyGroup Label="Compiling">
@@ -25,7 +25,7 @@
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
   </PropertyGroup>
 
-  <!-- Run `dotnet pack -p:GenerateCompatibilitySuppressionFile=true` to accept breaking changes
+  <!-- Run `dotnet pack -p:ApiCompatGenerateSuppressionFile=true` to accept breaking changes
        See https://docs.microsoft.com/en-us/dotnet/fundamentals/package-validation/overview for more information -->
   <PropertyGroup Label="API Validation">
     <EnablePackageValidation>true</EnablePackageValidation>
@@ -65,17 +65,16 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="EntityFrameworkCore.Jet" Version="7.0.3" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="7.0.13" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="7.0.13" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="7.0.13" />
-    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1" PrivateAssets="all" />
+    <PackageReference Include="EntityFrameworkCore.Jet" Version="8.0.0-alpha.1" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="8.0.0" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="8.0.0" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="8.0.0" />
     <PackageReference Include="MinVer" Version="4.3.0" PrivateAssets="all" />
-    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="7.0.11" />
-    <PackageReference Include="Oracle.EntityFrameworkCore" Version="7.21.12" />
-    <PackageReference Include="Pomelo.EntityFrameworkCore.MySql" Version="7.0.0" />
-    <PackageReference Include="System.Data.Odbc" Version="7.0.0" />
-    <PackageReference Include="System.Data.OleDb" Version="7.0.0" />
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="8.0.0" />
+    <PackageReference Include="Oracle.EntityFrameworkCore" Version="8.21.121" />
+    <PackageReference Include="Pomelo.EntityFrameworkCore.MySql" Version="8.0.0-beta.2" />
+    <PackageReference Include="System.Data.Odbc" Version="8.0.0" />
+    <PackageReference Include="System.Data.OleDb" Version="8.0.0" />
   </ItemGroup>
 
   <Target Name="ValidateNuGetPackage" AfterTargets="Pack">