Update dependencies from https://github.com/dotnet/roslyn build 20231006.7 (#93298)

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.8.0-3.23509.1 -> To Version 4.9.0-1.23506.7

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

Author: dotnet-maestro[bot]

eng/Version.Details.xml

@@ -358,18 +358,18 @@
       <Uri>https://github.com/dotnet/runtime-assets</Uri>
       <Sha>b7d8e946c831e79435054f65e49c2eebb74b55c6</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Net.Compilers.Toolset" Version="4.8.0-3.23509.1">
+    <Dependency Name="Microsoft.Net.Compilers.Toolset" Version="4.9.0-1.23506.7">
       <Uri>https://github.com/dotnet/roslyn</Uri>
-      <Sha>6d59156e24afd4f8c4402cfd525b0cb9c49c9730</Sha>
+      <Sha>0caa880a161057559d1dcaad890e4053f520136e</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.CodeAnalysis" Version="4.8.0-3.23509.1">
+    <Dependency Name="Microsoft.CodeAnalysis" Version="4.9.0-1.23506.7">
       <Uri>https://github.com/dotnet/roslyn</Uri>
-      <Sha>6d59156e24afd4f8c4402cfd525b0cb9c49c9730</Sha>
+      <Sha>0caa880a161057559d1dcaad890e4053f520136e</Sha>
       <SourceBuild RepoName="roslyn" ManagedOnly="true" />
     </Dependency>
-    <Dependency Name="Microsoft.CodeAnalysis.CSharp" Version="4.8.0-3.23509.1">
+    <Dependency Name="Microsoft.CodeAnalysis.CSharp" Version="4.9.0-1.23506.7">
       <Uri>https://github.com/dotnet/roslyn</Uri>
-      <Sha>6d59156e24afd4f8c4402cfd525b0cb9c49c9730</Sha>
+      <Sha>0caa880a161057559d1dcaad890e4053f520136e</Sha>
     </Dependency>
     <Dependency Name="Microsoft.CodeAnalysis.Analyzers" Version="3.11.0-beta1.23505.1">
       <Uri>https://github.com/dotnet/roslyn-analyzers</Uri>

eng/Versions.props

@@ -39,9 +39,9 @@
       Any tools that contribute to the design-time experience should use the MicrosoftCodeAnalysisVersion_LatestVS property above to ensure
       they do not break the local dev experience.
     -->
-    <MicrosoftCodeAnalysisCSharpVersion>4.8.0-3.23509.1</MicrosoftCodeAnalysisCSharpVersion>
-    <MicrosoftCodeAnalysisVersion>4.8.0-3.23509.1</MicrosoftCodeAnalysisVersion>
-    <MicrosoftNetCompilersToolsetVersion>4.8.0-3.23509.1</MicrosoftNetCompilersToolsetVersion>
+    <MicrosoftCodeAnalysisCSharpVersion>4.9.0-1.23506.7</MicrosoftCodeAnalysisCSharpVersion>
+    <MicrosoftCodeAnalysisVersion>4.9.0-1.23506.7</MicrosoftCodeAnalysisVersion>
+    <MicrosoftNetCompilersToolsetVersion>4.9.0-1.23506.7</MicrosoftNetCompilersToolsetVersion>
   </PropertyGroup>
   <!--
     For source generator support we need to target multiple versions of Roslyn in order to be able to run on older versions of Roslyn.