Merge branch '1.8.latest' into backport-1233-to-1.8.latest #19991

Job	Run time
test-metadata	4s
test-python	4m 46s
bigquery / python 3.8 / ubuntu-latest	40m 17s
bigquery / python 3.9 / ubuntu-latest	41m 44s
bigquery / python 3.10 / ubuntu-latest	38m 13s
bigquery / python 3.11 / ubuntu-latest	40m 44s
bigquery / python 3.8 / windows-latest	41m 33s
bigquery / python 3.8 / macos-12	48m 15s
require-label-comment	0s
	4h 15m 36s

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