fix: updates for tox -e flake8

Signed-off-by: Samantha Coyle <[email protected]>

Author: sicoyle

dapr_agents/workflow/orchestrators/llm/orchestrator.py

@@ -1051,7 +1051,7 @@ async def update_workflow_state(
             not self.memory_store._current_state
             or "instances" not in self.memory_store._current_state
         ):
-            raise ValueError(f"No workflow instances found in local state.")
+            raise ValueError("No workflow instances found in local state.")
 
         workflow_entry = self.memory_store._current_state["instances"].get(instance_id)
         if not workflow_entry:
@@ -1169,7 +1169,7 @@ async def trigger_agent_internal(
             not self.memory_store._current_state
             or "instances" not in self.memory_store._current_state
         ):
-            raise ValueError(f"No workflow instances found in local state.")
+            raise ValueError("No workflow instances found in local state.")
 
         workflow_entry = self.memory_store._current_state["instances"].get(instance_id)
         if not workflow_entry:
@@ -1228,7 +1228,7 @@ async def update_task_history_internal(
             not self.memory_store._current_state
             or "instances" not in self.memory_store._current_state
         ):
-            raise ValueError(f"No workflow instances found in local state.")
+            raise ValueError("No workflow instances found in local state.")
 
         workflow_entry = self.memory_store._current_state["instances"].get(instance_id)
         if not workflow_entry: