feat(utils): Fix linting

for the PR google#3673 & commit: 96e2f82

Author: Jainish-S

contributing/samples/nested_state_agent/agent.py

@@ -7,20 +7,20 @@
 
 
 def inject_nested_state(callback_context: CallbackContext):
-    callback_context.state["user"] = {
-        # "name": "Jainish",
-        # "profile": {"age": 24, "role": "Software Engineer"},
-    }
-    logging.info("State populated with nested user object.")
+  callback_context.state["user"] = {
+      # "name": "Jainish",
+      # "profile": {"age": 24, "role": "Software Engineer"},
+  }
+  logging.info("State populated with nested user object.")
 
 
 async def build_instruction(readonly_context: ReadonlyContext) -> str:
-    print(readonly_context.state)
-    template = (
-        "Current user is {{user?.name?}} and {{user?.profile?.role?}}. Please greet"
-        " them by name and designation."
-    )
-    return await inject_session_state(template, readonly_context)
+  print(readonly_context.state)
+  template = (
+      "Current user is {{user?.name?}} and {{user?.profile?.role?}}. Please"
+      " greet them by name and designation."
+  )
+  return await inject_session_state(template, readonly_context)
 
 
 agent = Agent(