Automated upgrade: bump pulumi/pulumi to 3.239.0 (#857)

Automated upgrade: bump pulumi/pulumi to 3.239.0

.pulumi.version

@@ -1 +1 @@
-3.192.0
+3.239.0

go.mod

@@ -5,6 +5,7 @@ go 1.25.8
 require (
 	github.com/aws/aws-sdk-go v1.55.5
 	github.com/blang/semver v3.5.1+incompatible
+	github.com/containerd/errdefs v1.0.0
 	github.com/distribution/reference v0.6.0
 	github.com/docker/buildx v0.22.0
 	github.com/docker/cli v28.0.4+incompatible
@@ -96,7 +97,6 @@ require (
 	github.com/containerd/containerd/api v1.8.0 // indirect
 	github.com/containerd/containerd/v2 v2.0.7 // indirect
 	github.com/containerd/continuity v0.4.5 // indirect
-	github.com/containerd/errdefs v1.0.0 // indirect
 	github.com/containerd/errdefs/pkg v0.3.0 // indirect
 	github.com/containerd/log v0.1.0 // indirect
 	github.com/containerd/platforms v1.0.0-rc.1 // indirect

sdk/dotnet/Pulumi.DockerBuild.csproj

@@ -11,7 +11,7 @@
     <PackageIcon>logo.png</PackageIcon>
     <Version>0.1.0-alpha.0+dev</Version>
 
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
     <Nullable>enable</Nullable>
   </PropertyGroup>