Weekly Preview OpenAPI Docs Refresh (#1865)

* Weekly OpenApiDocs Download.

* Remove unsupported path in WindowsUpdates.

* Remove undocumented API in Identity.Governance.

* Add generated MgCommandMetadata.json. [run ci]

---------

Co-authored-by: Microsoft Graph DevX Tooling <[email protected]>

Author: peombwa

config/ModuleMetadata.json

@@ -26,15 +26,15 @@
   ],
   "versions": {
     "authentication": {
-      "prerelease": "preview5",
+      "prerelease": "preview6",
       "version": "2.0.0"
     },
     "beta": {
-      "prerelease": "preview5",
+      "prerelease": "preview6",
       "version": "2.0.0"
     },
     "v1.0": {
-      "prerelease": "preview5",
+      "prerelease": "preview6",
       "version": "2.0.0"
     }
   }