[Snyk] Upgrade langchain from 0.0.163 to 0.2.8#13

gmickel wants to merge 1 commit intomaingmickel/memorybot:mainfrom

snyk-upgrade-666ee387c0df8dbf881b22db73d5347egmickel/memorybot:snyk-upgrade-666ee387c0df8dbf881b22db73d5347eCopy head branch name to clipboard