[main] Update dependencies from dotnet/msbuild (#19543)

* Update dependencies from https://github.com/dotnet/msbuild build 20260401.1
On relative base path root
Microsoft.Build , Microsoft.Build.Framework , Microsoft.Build.Tasks.Core , Microsoft.Build.Utilities.Core From Version 18.6.0-preview-26180-08 -> To Version 18.6.0-preview-26201-01

* Update dependencies from https://github.com/dotnet/msbuild build 20260402.4
On relative base path root
Microsoft.Build , Microsoft.Build.Framework , Microsoft.Build.Tasks.Core , Microsoft.Build.Utilities.Core From Version 18.6.0-preview-26180-08 -> To Version 18.6.0

* Update dependencies from https://github.com/dotnet/msbuild build 20260408.4
On relative base path root
Microsoft.Build , Microsoft.Build.Framework , Microsoft.Build.Tasks.Core , Microsoft.Build.Utilities.Core From Version 18.6.0-preview-26180-08 -> To Version 18.6.1

* Bump FSBuildVersion to 101 to fix package version check

FSharp.Core 11.0.100 and FSharp.Compiler.Service 43.12.100 have already
been published to NuGet, causing the 'Check published package version'
CI step to fail. Bump to 101 so the versions are unpublished.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

---------

Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>
Co-authored-by: Tomas Grosup <tomasgrosup@microsoft.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: 3 people

NuGet.config

@@ -8,6 +8,7 @@
     <clear />
     <!--Begin: Package sources managed by Dependency Flow automation. Do not edit the sources below.-->
     <!--  Begin: Package sources from DotNet-msbuild-Trusted -->
+    <add key="darc-pub-DotNet-msbuild-Trusted-e5ebe15" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-DotNet-msbuild-Trusted-e5ebe156/nuget/v3/index.json" />
     <!--  End: Package sources from DotNet-msbuild-Trusted -->
     <!--End: Package sources managed by Dependency Flow automation. Do not edit the sources above.-->
     <add key="dotnet-eng" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json" />

eng/Version.Details.props

@@ -8,10 +8,10 @@ This file should be imported by eng/Versions.props
     <!-- dotnet-arcade dependencies -->
     <MicrosoftDotNetArcadeSdkPackageVersion>10.0.0-beta.26177.7</MicrosoftDotNetArcadeSdkPackageVersion>
     <!-- dotnet-msbuild dependencies -->
-    <MicrosoftBuildPackageVersion>18.6.0-preview-26180-08</MicrosoftBuildPackageVersion>
-    <MicrosoftBuildFrameworkPackageVersion>18.6.0-preview-26180-08</MicrosoftBuildFrameworkPackageVersion>
-    <MicrosoftBuildTasksCorePackageVersion>18.6.0-preview-26180-08</MicrosoftBuildTasksCorePackageVersion>
-    <MicrosoftBuildUtilitiesCorePackageVersion>18.6.0-preview-26180-08</MicrosoftBuildUtilitiesCorePackageVersion>
+    <MicrosoftBuildPackageVersion>18.6.1</MicrosoftBuildPackageVersion>
+    <MicrosoftBuildFrameworkPackageVersion>18.6.1</MicrosoftBuildFrameworkPackageVersion>
+    <MicrosoftBuildTasksCorePackageVersion>18.6.1</MicrosoftBuildTasksCorePackageVersion>
+    <MicrosoftBuildUtilitiesCorePackageVersion>18.6.1</MicrosoftBuildUtilitiesCorePackageVersion>
     <!-- dotnet-optimization dependencies -->
     <optimizationlinuxarm64MIBCRuntimePackageVersion>1.0.0-prerelease.26180.1</optimizationlinuxarm64MIBCRuntimePackageVersion>
     <optimizationlinuxx64MIBCRuntimePackageVersion>1.0.0-prerelease.26180.1</optimizationlinuxx64MIBCRuntimePackageVersion>

eng/Version.Details.xml

@@ -2,21 +2,21 @@
 <Dependencies>
   <Source Uri="https://github.com/dotnet/dotnet" Mapping="fsharp" Sha="1a405c76db678301b6f6f5b22d2a63a152c26b97" BarId="309188" />
   <ProductDependencies>
-    <Dependency Name="Microsoft.Build" Version="18.6.0-preview-26180-08">
+    <Dependency Name="Microsoft.Build" Version="18.6.1">
       <Uri>https://github.com/dotnet/msbuild</Uri>
-      <Sha>8a330c4406f03bafa3006d1e1213ec5c62252640</Sha>
+      <Sha>e5ebe15655a6be2b2e3209464d0cde1b8825ab57</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Build.Framework" Version="18.6.0-preview-26180-08">
+    <Dependency Name="Microsoft.Build.Framework" Version="18.6.1">
       <Uri>https://github.com/dotnet/msbuild</Uri>
-      <Sha>8a330c4406f03bafa3006d1e1213ec5c62252640</Sha>
+      <Sha>e5ebe15655a6be2b2e3209464d0cde1b8825ab57</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Build.Tasks.Core" Version="18.6.0-preview-26180-08">
+    <Dependency Name="Microsoft.Build.Tasks.Core" Version="18.6.1">
       <Uri>https://github.com/dotnet/msbuild</Uri>
-      <Sha>8a330c4406f03bafa3006d1e1213ec5c62252640</Sha>
+      <Sha>e5ebe15655a6be2b2e3209464d0cde1b8825ab57</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Build.Utilities.Core" Version="18.6.0-preview-26180-08">
+    <Dependency Name="Microsoft.Build.Utilities.Core" Version="18.6.1">
       <Uri>https://github.com/dotnet/msbuild</Uri>
-      <Sha>8a330c4406f03bafa3006d1e1213ec5c62252640</Sha>
+      <Sha>e5ebe15655a6be2b2e3209464d0cde1b8825ab57</Sha>
     </Dependency>
     <Dependency Name="Microsoft.CodeAnalysis" Version="5.7.0-1.26209.5">
       <Uri>https://github.com/dotnet/roslyn</Uri>