chore(deps): update dotnet monorepo to 4.12.0

Author: renovate[bot]

src/Splat.DependencyInjection.SourceGenerator.Tests/Splat.DependencyInjection.SourceGenerator.Tests.csproj

@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis" Version="4.11.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis" Version="4.12.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
     <PackageReference Include="xunit" Version="2.9.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" PrivateAssets="all" />

src/Splat.DependencyInjection.SourceGenerator/Splat.DependencyInjection.SourceGenerator.csproj

@@ -14,8 +14,8 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.4" PrivateAssets="all" GeneratePathProperty="true" />
-    <PackageReference Include="Microsoft.CodeAnalysis.Common" Version="4.0.1" PrivateAssets="all" GeneratePathProperty="true" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.0.1" PrivateAssets="all" GeneratePathProperty="true" />
+    <PackageReference Include="Microsoft.CodeAnalysis.Common" Version="4.12.0" PrivateAssets="all" GeneratePathProperty="true" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.12.0" PrivateAssets="all" GeneratePathProperty="true" />
     <PackageReference Include="ReactiveMarbles.RoslynHelpers" Version="1.2.1" GeneratePathProperty="true" PrivateAssets="all" />
     <PackageReference Include="ILRepack" Version="2.0.34" GeneratePathProperty="true" PrivateAssets="all" />
   </ItemGroup>