[evaluation] backport 1.16.6 release notes; bump version to 1.16.7#46574

slister1001 merged 2 commits intomainAzure/azure-sdk-for-python:mainfrom

backport/changelog-1.16.6-to-mainAzure/azure-sdk-for-python:backport/changelog-1.16.6-to-mainCopy head branch name to clipboard