[ReleasePR mediaservices] [Hub Generated] Review request for Microsoft.Media/Encoding to add version preview/2022-05-01-preview (#2741)

Create to sync Azure/azure-rest-api-specs#21160
[ReCreate this PR](https://github.com/azure-resource-manager-schemas/compare/main...azure-sdk:sdkAuto/mediaservices?expand=1)

Author: msftbot[bot]