Bump go.opentelemetry.io/otel/trace from 1.29.0 to 1.30.0 #292

Job	Run time
Test (stable)	41s
Test (oldstable)	35s
Test (otlp, stable)	58s
Test (otlp, oldstable)	52s
Test (gcp, stable)	1m 4s
Test (gcp, oldstable)	54s
Test (grpc, stable)	1m 2s
Test (grpc, oldstable)	1m 1s
Test (examples/grpc, stable)	1m 10s
Test (examples/grpc, oldstable)	1m 0s
Test (http, stable)	56s
Test (http, oldstable)	47s
Test (examples/http, stable)	1m 4s
Test (examples/http, oldstable)	1m 2s
All Tests	1s
	13m 7s

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