`servicebus`: Update SDK to `2021-06-01-preview`#13701

Merged

katbyte merged 2 commits intohashicorp:mainfrom aristosvo:servicebus/update-api-to-2021-06-01-preview

Oct 15, 2021

+1,570-1,346

Commits on Oct 15, 2021

go mod vendor
Aris van Ommeren
committed
Enum changes
Aris van Ommeren
committed