chore: remove upper bound on litellm version, restrict breaking versions

PiperOrigin-RevId: 830622849

Author: speedstorm1

setup.py

@@ -178,7 +178,7 @@
     "jsonschema",
     "ruamel.yaml",
     "pyyaml",
-    "litellm >= 1.72.4, <= 1.76.3",
+    "litellm >= 1.72.4, != 1.77.2, != 1.77.3, != 1.77.4",
 ]
 
 langchain_extra_require = [