Bump MessagePack to 2.5.302

Author: AArnott

Directory.Packages.props

@@ -5,7 +5,7 @@
     <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
     <CentralPackageTransitivePinningEnabled>true</CentralPackageTransitivePinningEnabled>
     <MicrosoftTestingPlatformVersion>2.2.2</MicrosoftTestingPlatformVersion>
-    <MessagePackVersion>2.5.198</MessagePackVersion>
+    <MessagePackVersion>2.5.302</MessagePackVersion>
     <MicroBuildVersion>2.0.226</MicroBuildVersion>
     <RoslynVersion>4.14.0</RoslynVersion>
     <CodeAnalysisAnalyzerVersion>4.14.0</CodeAnalysisAnalyzerVersion>