Bump `opentelemetry` to `0.27.0` #2024

Job	Run time
check-examples	2m 10s
check (poem-derive, poem-derive)	58s
check (poem, poem)	5m 19s
check (poem-openapi-derive, poem-openapi-derive)	1m 10s
check (poem-openapi, poem-openapi)	3m 42s
check (poem-lambda, poem-lambda)	1m 38s
check (poem-grpc, poem-grpc)	1m 52s
	16m 49s

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