fix types

Author: mr-c

cwltool/command_line_tool.py

@@ -888,12 +888,12 @@ def remove_prefix(s: str, prefix: str) -> str:
                         keydict[cls] = r
 
             # If there are environmental variables to preserve, add it to the key
-            env_def = keydict.get("EnvVarRequirement", {})
+            env_def = cast(CWLObjectType, keydict.get("EnvVarRequirement", {}))
             env_requirement, _ = self.get_requirement("EnvVarRequirement")
             if env_requirement:
-                for req in env_requirement["envDef"]:
-                    env_name = req["envName"]
-                    env_value = req["envValue"]
+                for req in cast(list[CWLObjectType], env_requirement["envDef"]):
+                    env_name = cast(str, req["envName"])
+                    env_value = cast(str, req["envValue"])
                     env_def[env_name] = env_value
             if runtimeContext.preserve_environment is not None:
                 # This could either be a list or a dictionary