Firestore: Fix Out of expect when document update SERVER_TIMESTAMP - #8471

Firestore: Fix Out of expect when document update SERVER_TIMESTAMP#8471

HemangChothani wants to merge 3 commits into

googleapis:mastergoogleapis/google-cloud-python:masterfrom

HemangChothani:document_update_server_timestampHemangChothani/google-cloud-python:document_update_server_timestampCopy head branch name to clipboard