eng: update SmokeTests dependencies to latest stable versions

- FSharp.Control.TaskSeq: 0.4.0 → 1.1.1 (latest published)
- FsToolkit.ErrorHandling.TaskResult: 4.15.1 → 4.18.0

The SmokeTests reference the published NuGet package to verify API
compatibility. Keeping the reference at 0.4.0 while the library is at
1.1.1 means the smoke tests were only verifying a very old API surface.
Updating to 1.1.1 ensures the smoke tests cover the current published API.

All 11 smoke tests pass with both updates.

Co-authored-by: Copilot <[email protected]>

Author: github-actions[bot]

src/FSharp.Control.TaskSeq.SmokeTests/FSharp.Control.TaskSeq.SmokeTests.fsproj

@@ -19,8 +19,8 @@
                  highest version available.
                  This ensures that, if we have a forwards compat issue, we will get an error.
     -->
-    <PackageReference Include="FSharp.Control.TaskSeq" Version="0.4.0" />
-    <PackageReference Include="FsToolkit.ErrorHandling.TaskResult" Version="4.15.1" />
+    <PackageReference Include="FSharp.Control.TaskSeq" Version="1.1.1" />
+    <PackageReference Include="FsToolkit.ErrorHandling.TaskResult" Version="4.18.0" />
     <PackageReference Include="FsUnit.xUnit" Version="6.0.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.4.0" />
     <PackageReference Include="xunit" Version="2.9.3" />