test: update meta endpoint assertion for node_colors field

Signed-off-by: CTC97 <ctcurnin@gmail.com>

Author: CTC97

tests/web/test_main.py

@@ -415,7 +415,7 @@ def test_meta(client: TestClient) -> None:
 
     response = client.get("/api/meta")
     assert response.status_code == 200
-    assert response.json() == {"version": _sqlmesh_version(), "has_running_task": False}
+    assert response.json() == {"version": _sqlmesh_version(), "has_running_task": False, "node_colors": {}}
 
 
 def test_modules(client: TestClient) -> None: