[GSK-3914] Fix RagasMetric outdated message #3997

Job	Run time
Check if wheel can be installed with pip	59s
Build and check doc	7m 39s
Python 3.9 on ubuntu-latest	19m 10s
Check if wheel can be installed with PDM	1m 10s
Python 3.10 on ubuntu-latest	20m 26s
Python 3.11 on ubuntu-latest	17m 28s
Check if wheel can be installed with using Poetry	1m 3s
Python 3.12 on ubuntu-latest	24m 48s
Python 3.10 on windows-2022	20m 2s
Python 3.10 on macos-latest	14m 48s
Python 3.10 (Pydantic V1) on ubuntu-latest	18m 58s
Python 3.10 (Pandas V1) on ubuntu-latest	20m 5s
Python 3.10 (Minimal langchain) on ubuntu-latest	19m 50s
retry-on-failure	0s
	3h 6m 26s

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