Merge branch 'main' into fix-get_sorted_metrics

Author: lzchen

opentelemetry-sdk/tests/metrics/integration_test/test_exponential_bucket_histogram.py

@@ -135,8 +135,6 @@ def test_synchronous_delta_temporality(self):
 
             results.append(reader.get_metrics_data())
 
-        provider.shutdown()
-
         for metrics_data in results:
             self.assertIsNone(metrics_data)