(chore): upgrade versions to latest

Author: fern-api[bot]

fern/generators.yml

@@ -54,7 +54,7 @@ groups:
   java-sdk:
     generators:
       - name: fernapi/fern-java-sdk
-        version: 2.3.1
+        version: 2.8.1
         publish-metadata:
           author: "SSOReady"
           email: "[email protected]"