MNT: satisfy ruff format on the NOAA catalog helpers

Collapse the RuntimeError message and the test assertion the formatter
wants on one line. No behaviour change.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Author: Gui-FernandesBR

rocketpy/environment/fetchers/noaa_catalog.py

@@ -407,6 +407,5 @@ def fetch_latest_noaa_dataset(
             time.sleep(min(base_delay**attempt_count, MAX_RETRY_DELAY_SECONDS))
 
     raise RuntimeError(
-        "Unable to load the latest NOAA/THREDDS weather dataset through "
-        + file_url
+        "Unable to load the latest NOAA/THREDDS weather dataset through " + file_url
     )

tests/unit/environment/test_fetchers.py

@@ -439,9 +439,7 @@ def test_list_noaa_atmosphere_datasets_parses_catalog_refs(monkeypatch):
         "NAM CONUS 12km from NOAAPORT",
     ]
     assert datasets[0]["collection_path"] == "grib/NCEP/GFS/Global_0p25deg"
-    assert datasets[0]["opendap_best_url"].endswith(
-        "grib/NCEP/GFS/Global_0p25deg/Best"
-    )
+    assert datasets[0]["opendap_best_url"].endswith("grib/NCEP/GFS/Global_0p25deg/Best")
 
 
 def test_list_noaa_dataset_identifiers_sorts_runs_newest_first(monkeypatch):