Update dotnet monorepo to v9

Author: renovate[bot]

global.json

@@ -1,6 +1,6 @@
 {
     "sdk": {
-        "version": "8.0.100",
+        "version": "9.0.301",
         "rollForward": "latestFeature"
     }
 }

src/FluentNHibernate.Testing/FluentNHibernate.Testing.csproj

@@ -18,7 +18,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Data.Sqlite" Version="8.0.3" />
+    <PackageReference Include="Microsoft.Data.Sqlite" Version="9.0.7" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
     <PackageReference Include="FakeItEasy" Version="8.3.0" />
     <PackageReference Include="NUnit" Version="4.3.2" />
@@ -31,7 +31,7 @@
   </ItemGroup>
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'net6.0' ">
-    <PackageReference Include="System.Drawing.Common" Version="8.0.7" />
+    <PackageReference Include="System.Drawing.Common" Version="9.0.7" />
   </ItemGroup>
 
   <ItemGroup>