Update global ms.date (#9015)

Author: gewarren

docfx.json

@@ -43,7 +43,7 @@
       "recommendations": true,
       "author": "dotnet-bot",
       "ms.author": "dotnetcontent",
-      "ms.date": "04/30/2018",
+      "ms.date": "05/16/2023",
       "searchScope": [".NET"],
       "uhfHeaderId": "MSDocsHeader-DotNet",
       "apiPlatform": "dotnet",