Conform server tracing interceptor to OTel's conventions #62

Job	Run time
Soundness / Swift license headers check	7s
Soundness / Check generated code	2m 0s
Cxx interop / Construct Cxx interop matrix	3s
Unit tests / Construct unit test matrix	3s
Soundness / API breakage check	2m 0s
Soundness / Documentation check	1m 38s
Soundness / Unacceptable language check	3s
Soundness / License headers check	5s
Soundness / Broken symlinks check	5s
Soundness / Format check	41s
Soundness / Shell check	33s
Soundness / YAML lint check	3s
Soundness / Python lint check	4s
Cxx interop / Cxx interop / Linux (6.0)	1m 34s
Cxx interop / Cxx interop / Linux (nightly-6.1)	1m 47s
Cxx interop / Cxx interop / Linux (nightly-main)	1m 45s
Unit tests / Unit tests / Linux (6.0)	1m 37s
Unit tests / Unit tests / Linux (nightly-6.1)	1m 43s
Unit tests / Unit tests / Linux (nightly-main)	1m 36s
	17m 27s

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