AVRO-4196: Bump C# build utilities (#3549)

Author: RyanSkraba

lang/csharp/versions.props

@@ -61,8 +61,8 @@
     <BenchmarkDotNetVersion>0.13.10</BenchmarkDotNetVersion>
     <CoverletCollectorVersion>6.0.0</CoverletCollectorVersion>
     <CoverletMSBuildVersion>6.0.0</CoverletMSBuildVersion>
-    <MicrosoftBuildFrameworkVersion>17.8.3</MicrosoftBuildFrameworkVersion>
-    <MicrosoftBuildUtilitiesCoreVersion>17.8.3</MicrosoftBuildUtilitiesCoreVersion>
+    <MicrosoftBuildFrameworkVersion>17.8.43</MicrosoftBuildFrameworkVersion>
+    <MicrosoftBuildUtilitiesCoreVersion>17.8.43</MicrosoftBuildUtilitiesCoreVersion>
     <MicrosoftCodeAnalysisVersion>4.7.0</MicrosoftCodeAnalysisVersion>
     <MicrosoftCodeAnalysisCSharpVersion>4.7.0</MicrosoftCodeAnalysisCSharpVersion>
     <MicrosoftCodeAnalysisCSharpCodeStyleVersion>4.7.0</MicrosoftCodeAnalysisCSharpCodeStyleVersion>