[main] Update dependencies from dotnet/roslyn (#14066)

This pull request updates the following dependencies

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## From https://github.com/dotnet/roslyn
- **Subscription**:
[8a4332aa-2543-4c51-b941-e73f31e22328](https://maestro.dot.net/subscriptions?search=8a4332aa-2543-4c51-b941-e73f31e22328)
- **Build**:
[20260614.1](https://dev.azure.com/dnceng/internal/_build/results?buildId=3000094)
([318627](https://maestro.dot.net/channel/548/github:dotnet:roslyn/build/318627))
- **Date Produced**: June 14, 2026 4:24:02 PM UTC
- **Commit**:
[94180ea43ae879ba286300360d677cc72f0a1369](dotnet/roslyn@94180ea)
- **Branch**: [main](https://github.com/dotnet/roslyn/tree/main)

[DependencyUpdate]: <> (Begin)

- **Dependency Updates**:
  - From [5.9.0-1.26306.2 to 5.9.0-1.26314.1][1]
     - Microsoft.Net.Compilers.Toolset

[1]: dotnet/roslyn@f5856fc...94180ea

[DependencyUpdate]: <> (End)


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Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>

Author: dotnet-maestro[bot]

eng/Version.Details.props

@@ -9,7 +9,7 @@ This file should be imported by eng/Versions.props
     <MicrosoftDotNetArcadeSdkPackageVersion>10.0.0-beta.26304.4</MicrosoftDotNetArcadeSdkPackageVersion>
     <MicrosoftDotNetXUnitV3ExtensionsPackageVersion>10.0.0-beta.26304.4</MicrosoftDotNetXUnitV3ExtensionsPackageVersion>
     <!-- dotnet-roslyn dependencies -->
-    <MicrosoftNetCompilersToolsetPackageVersion>5.9.0-1.26306.2</MicrosoftNetCompilersToolsetPackageVersion>
+    <MicrosoftNetCompilersToolsetPackageVersion>5.9.0-1.26314.1</MicrosoftNetCompilersToolsetPackageVersion>
     <!-- dotnet-runtime dependencies -->
     <SystemCodeDomPackageVersion>10.0.8</SystemCodeDomPackageVersion>
     <SystemCollectionsImmutablePackageVersion>10.0.8</SystemCollectionsImmutablePackageVersion>

eng/Version.Details.xml

@@ -114,9 +114,9 @@
       <Uri>https://github.com/nuget/nuget.client</Uri>
       <Sha>551e8bafd7ec41484f2d8d7fadcd0750f7db173a</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Net.Compilers.Toolset" Version="5.9.0-1.26306.2">
+    <Dependency Name="Microsoft.Net.Compilers.Toolset" Version="5.9.0-1.26314.1">
       <Uri>https://github.com/dotnet/roslyn</Uri>
-      <Sha>f5856fc44e59b6fffe14c29c74834d77d2554615</Sha>
+      <Sha>94180ea43ae879ba286300360d677cc72f0a1369</Sha>
     </Dependency>
     <Dependency Name="Microsoft.DotNet.XUnitV3Extensions" Version="10.0.0-beta.26304.4">
       <Uri>https://github.com/dotnet/arcade</Uri>