chore(deps): update dependency langchain to v0.3.2

| datasource | package   | from   | to    |
| ---------- | --------- | ------ | ----- |
| pypi       | langchain | 0.2.12 | 0.3.2 |

src/leapfrogai_api/pyproject.toml

@@ -16,7 +16,7 @@ dependencies = [
     "watchdog == 5.0.2",
     "leapfrogai_sdk",
     "supabase == 2.6.0",
-    "langchain == 0.2.12",
+    "langchain ==0.3.2",
     "langchain-community == 0.2.11",
     "unstructured[md,xlsx,pptx] ==0.15.13", # Only specify necessary filetypes to prevent package bloat (e.g. 130MB vs 6GB)
     "nltk == 3.9.1",                        # Required for pickled code containing .pptx parsing dependencies