fix: added exception for pika consumer

Signed-off-by: Cagri Yonca <[email protected]>

Author: CagriYonca

src/instana/instrumentation/pika.py

@@ -255,6 +255,8 @@ def _consume(gen: Iterator[object]) -> object:
 
                     try:
                         yield yielded
+                    except GeneratorExit:
+                        gen.close()
                     except Exception as exc:
                         span.record_exception(exc)