fix(test): fix flaky test

Author: ndyakov

internal/pool/pool_test.go

@@ -497,9 +497,14 @@ func TestDialerRetryConfiguration(t *testing.T) {
 		}
 
 		// Should have attempted 5 times (default DialerRetries = 5)
+		// Note: There may be one additional attempt from tryDial() goroutine
+		// which is launched when dialErrorsNum reaches PoolSize
 		finalAttempts := atomic.LoadInt64(&attempts)
-		if finalAttempts != 5 {
-			t.Errorf("Expected 5 dial attempts (default), got %d", finalAttempts)
+		if finalAttempts < 5 {
+			t.Errorf("Expected at least 5 dial attempts (default), got %d", finalAttempts)
+		}
+		if finalAttempts > 6 {
+			t.Errorf("Expected around 5 dial attempts, got %d (too many)", finalAttempts)
 		}
 	})
 }