Update C# compiler (#70947)

Brings in support for required members

eng/CodeAnalysis.src.globalconfig

@@ -1073,8 +1073,8 @@ dotnet_diagnostic.SA1204.severity = none
 # SA1205: Partial elements should declare an access modifier
 dotnet_diagnostic.SA1205.severity = warning
 
-# SA1206: Keyword ordering
-dotnet_diagnostic.SA1206.severity = warning
+# SA1206: Keyword ordering - TODO Re-enable as warning after https://github.com/DotNetAnalyzers/StyleCopAnalyzers/issues/3527
+dotnet_diagnostic.SA1206.severity = suggestion
 
 # SA1208: Using directive ordering
 dotnet_diagnostic.SA1208.severity = none

eng/Versions.props

@@ -49,7 +49,7 @@
     <!--
       TODO: Remove pinned version once arcade supplies a compiler that enables the repo to compile.
     -->
-    <MicrosoftNetCompilersToolsetVersion>4.3.0-3.22281.14</MicrosoftNetCompilersToolsetVersion>
+    <MicrosoftNetCompilersToolsetVersion>4.4.0-1.22315.13</MicrosoftNetCompilersToolsetVersion>
     <!-- SDK dependencies -->
     <MicrosoftDotNetCompatibilityVersion>2.0.0-preview.4.22252.4</MicrosoftDotNetCompatibilityVersion>
     <!-- Arcade dependencies -->