build: fix Pack of Compiler-Extension (#4800)

* build: fix Pack of Compiler-Extension

* chore: update package reference

Author: Flash0ver

src/Sentry.Compiler.Extensions/Sentry.Compiler.Extensions.csproj

@@ -15,7 +15,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.3.0" PrivateAssets="all"/>
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.3.1" PrivateAssets="all"/>
   </ItemGroup>
 
   <ItemGroup>

src/Sentry/Sentry.csproj

@@ -189,7 +189,20 @@
                       OutputItemType="Analyzer"
                       ReferenceOutputAssembly="false"
                       PrivateAssets="all"
-                      Pack="true"
-                      PackagePath="analyzers/dotnet/cs" />
+                      SetTargetFramework="TargetFramework=netstandard2.0" />
   </ItemGroup>
+
+  <PropertyGroup>
+    <BeforePack>$(BeforePack);PackSentryCompilerExtensions</BeforePack>
+  </PropertyGroup>
+
+  <Target Name="PackSentryCompilerExtensions">
+    <ItemGroup>
+      <None Include="..\Sentry.Compiler.Extensions\bin\$(Configuration)\netstandard2.0\Sentry.Compiler.Extensions.dll">
+        <Pack>true</Pack>
+        <PackagePath>analyzers\dotnet\roslyn4.3\cs</PackagePath>
+      </None>
+    </ItemGroup>
+  </Target>
+
 </Project>