feat: track picodata version in system_tables.md

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• Close #240 (closed)
• Target branch: main
• Changes should be cherry-picked to 24.2: да, но спека нужна для версии 24.2.2
• Staging: https://docs.binary.picodata.io/picodata/asabirov_track_picodata_version/architecture/system_tables/