some python version corrections

Author: d-biehl

mypy.ini

@@ -2,7 +2,7 @@
 # File reference here - http://mypy.readthedocs.io/en/latest/config_file.html#config-file
 
 [mypy]
-python_version = 3.9
+python_version = 3.8
 plugins = pydantic.mypy
 exclude = robotcode/external/|dist|node_modules
 warn_redundant_casts = True

robotcode/debugger/__main__.py

@@ -151,7 +151,7 @@ async def start_debugpy_async() -> None:
     loop = asyncio.new_event_loop()
 
     thread = threading.Thread(name="RobotCode Debugger", target=run_server, args=(port, loop))
-    thread.setDaemon(True)
+    thread.daemon = True
     thread.start()
 
     server = await wait_for_server()

vscode-client/debugmanager.ts

@@ -97,7 +97,7 @@ class RobotCodeDebugAdapterDescriptorFactory implements vscode.DebugAdapterDescr
   ): vscode.ProviderResult<vscode.DebugAdapterDescriptor> {
     const config = vscode.workspace.getConfiguration(CONFIG_SECTION, session.workspaceFolder);
 
-    const mode = config.get<string>("debugAdapter.mode", "stdio");
+    const mode = config.get<string>("debugAdapter.mode");
 
     switch (mode) {
       case "stdio": {