build: bump the langchain group with 3 updates (#1133)

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

poetry.lock

@@ -18,9 +18,9 @@ azure-storage-blob = "12.20.0"
 azure-identity = "1.17.1"
 flask = {extras = ["async"], version = "^3.0.3"}
 openai = "1.35.10"
-langchain = "0.2.6"
-langchain-community = "0.2.6"
-langchain-openai = "0.1.14"
+langchain = "0.2.7"
+langchain-community = "0.2.7"
+langchain-openai = "0.1.16"
 requests = "2.32.3"
 tiktoken = "0.7.0"
 azure-storage-queue = "12.10.0"