Bump google.golang.org/grpc from 1.45.0 to 1.58.1 in /exporter/opencensusexporter #1361

Job	Run time
setup-environment	7m 4s
lint	23s
check-collector-module-version	5s
build-examples	1m 13s
checks	19s
correctness-metrics	55s
correctness-traces	1m 3s
integration-tests	7m 42s
unittest (1.18)	51s
unittest (1.17)	1m 6s
cross-compile	0s
windows-msi	0s
build-package	0s
publish-check	0s
publish-dev	0s
publish-stable	0s
	20m 41s

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