velero: narrow replay_collector_blobs's except to JSONDecodeError

json.loads() on a str only ever raises JSONDecodeError for malformed
input; the broad except Exception also swallowed anything unexpected
(e.g. a TypeError or MemoryError) and re-labeled it as an
"Error loading json" ValueError, which would mislead whoever debugs
it. Catch the specific decode error so genuinely unexpected failures
propagate untouched.

Environment: Datadog workspace

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

Author: vitkyrka

datadog_checks_dev/datadog_checks/dev/_env.py

@@ -137,7 +137,7 @@ def replay_collector_blobs(matches: list[str], stub_aggregator: Any, stub_agent:
     for raw_json in matches:
         try:
             collector = json.loads(raw_json)
-        except Exception as e:
+        except json.JSONDecodeError as e:
             raise ValueError(f'Error loading json: {e}\nCollector Json Output:\n{raw_json}') from e
         replay_check_run(collector, stub_aggregator, stub_agent)