Bump google.golang.org/grpc from 1.68.1 to 1.69.0 #9353

Job	Run time
cache-deps (linux)	37s
cache-deps (windows)	59s
lint (linux)	5m 28s
Build matrix	5s
unit-test (ubuntu-22.04)	4m 43s
unit-test (macos-latest)	4m 26s
images (linux)	6m 54s
unit-test (linux with race detection)	6m 38s
lint (windows)	8m 37s
unit-test (windows)	8m 20s
artifacts (windows)	5m 52s
images (windows)	0s
integration (windows)	0s
integration (linux)	0s
integration-k8s	0s
artifacts (linux)	0s
success	0s
	52m 39s

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