Fix brackets

Author: znichollscr

python-packages/input4MIPs-CVs/src/input4MIPs_CVs/cli/update-esgf-scrape.py

@@ -157,7 +157,7 @@ def fix_timestamp(v: str | list | None) -> str | None:
 
     for k in res:
         if "_timestamp" in res[k] and isinstance(res[k]["_timestamp"], list):
-            if len(res[k]["_timestamp"] != 1):
+            if len(res[k]["_timestamp"]) != 1:
                 msg = f"Unexpected value for {source_id=} for {source_id['_timestamp']}"
                 raise AssertionError(msg)