fix(enums): add missing GraphErrorCode values#1078

gavinbarron merged 2 commits intomicrosoftgraph:mainmicrosoftgraph/msgraph-beta-sdk-dotnet:mainfrom

AndrewShchetkin:fix/graph-error-codesAndrewShchetkin/msgraph-beta-sdk-dotnet:fix/graph-error-codesCopy head branch name to clipboard