test: fix test setup for connect delay

Signed-off-by: Harshit Gangal <harshit@planetscale.com>

go/pools/smartconnpool/pool_test.go

@@ -620,7 +620,7 @@ func TestConnReopen(t *testing.T) {
 	assert.GreaterOrEqual(t, p.Metrics.IdleClosed(), int64(1))
 
 	// adding connection delay
-	state.chaos.delayConnect = 3 * time.Second
+	state.chaos.delayConnect = 1500 * time.Millisecond
 	// wait enough to reach idle timeout and connect timeout.
 	time.Sleep(3 * time.Second)
 	assert.Zero(t, p.Active())