Bump google.golang.org/grpc from 1.53.0 to 1.63.0 in /exporter/otlpexporter #789

Job	Run time
setup-environment	38s
lint	1m 31s
unittest (1.20)	1m 19s
checks	28s
unittest (1.19)	1m 13s
cross-build-collector (darwin, amd64)	22s
test-coverage	1m 19s
cross-build-collector (darwin, arm64)	23s
cross-build-collector (linux, 386)	22s
cross-build-collector (linux, amd64)	23s
cross-build-collector (linux, arm64)	18s
cross-build-collector (linux, ppc64le)	16s
cross-build-collector (linux, arm)	18s
cross-build-collector (windows, 386)	17s
cross-build-collector (windows, amd64)	16s
	9m 23s

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