`utcnow` is deprecated #2274

Job	Run time
no_llm (Python 3.9 on ubuntu-latest)	24s
no_llm (Python 3.10 on ubuntu-latest)	28s
no_llm (Python 3.11 on ubuntu-latest)	22s
no_llm (Python 3.12 on ubuntu-latest)	24s
no_llm (Python 3.9 on macos-latest)	46s
no_llm (Python 3.10 on macos-latest)	37s
no_llm (Python 3.11 on macos-latest)	20s
no_llm (Python 3.12 on macos-latest)	22s
no_llm (Python 3.9 on windows-latest)	43s
no_llm (Python 3.10 on windows-latest)	43s
no_llm (Python 3.11 on windows-latest)	43s
no_llm (Python 3.12 on windows-latest)	42s
all (Python 3.9 on ubuntu-latest)	42s
	7m 16s

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