chore: add placeholder version in README.md file

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/release-note-none

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[LGTM Timeline notifier]

Timeline:

• 2024-04-11 06:43:38.518714665 +0000 UTC m=+1117480.046255211: :heavy_multiplication_x::repeat: reset by ti-chi-bot.

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New changes are detected. LGTM label has been removed.