Upgrade langchain lib to 0.2.7

Upgrade langchain lib to 0.2.7.

HAI-439 Upgrade langchain-community to support cost-calculation of gpt-4o model

https://servicemax.atlassian.net/browse/HAI-439

What's Changed

• HAI-439 upgrade langchain-community to 0.2.4 to include cost calcuation setting of gpt-4o by @haoruiqian in #6

New Contributors

• @haoruiqian made their first contribution in #6

Full Changelog: v0.1.5...v0.2.4

MAX-32889 Fix stream abort workaround issue

Merge pull request #5 from benjaminliugang/MAX-32889-1

MAX-32889 Fix stream abort workaround issue

MAX-32889 Upgrade Langchain to v0.1.12

What's Changed

• MAX-32889 Upgrade Langchain to v0.1.12 by @benjaminliugang in #4

Full Changelog: v0.1.3...v0.1.4

Remove test logs

Remove test logs

Add log to test newrelic metric issue

Add log to test newrelic metric issue.

Upgrade the langchain lib to 0.0.352.

Upgrade the langchain lib to 0.0.352.

add support to abort streaming

• add support to abort streaming