Integration test TestPostgreSQL is flaky #608
Description
--- FAIL: TestPostgreSQL (1.30s)
integration_test.go:2413: failed to insert row: spanner: code = "InvalidArgument", desc = "Previously received a different request with this seqno. seqno=2\nRequested SQL: INSERT INTO test (id, value) values ($1, $2)", requestID = "1.c222b14a650c84fd.1.3.13.1"