(chore): upgrade versions to latest

Author: fern-api[bot]

fern/apis/api/generators.yml

@@ -10,7 +10,7 @@ groups:
   python-sdk:
     generators:
       - name: fernapi/fern-python-sdk
-        version: 4.3.6
+        version: 4.3.8
         api:
           settings:
             unions: v1