Fixed langchain test matrix

Author: antonpirker

tox.ini

@@ -141,9 +141,9 @@ envlist =
     {py3.6,py3.11,py3.12}-huey-latest
 
     # Langchain
-    {py3.9,3.11,3.12}-langchain-0.1
-    {py3.9,3.11,3.12}-langchain-latest
-    {py3.9,3.11,3.12}-langchain-notiktoken
+    {py3.9,py3.11,py3.12}-langchain-0.1
+    {py3.9,py3.11,py3.12}-langchain-latest
+    {py3.9,py3.11,py3.12}-langchain-notiktoken
 
     # Loguru
     {py3.6,py3.11,py3.12}-loguru-v{0.5}