**Describe the issue**
```
milovidov-desktop :) SELECT parseDateTimeBestEffort('20220101-010203')

SELECT parseDateTimeBestEffort('20220101-010203')


0 rows in set. Elapsed: 0.153 sec. 

Received exception:
Code: 41. DB::Exception: Cannot read DateTime: unexpected number of decimal digits for time zone offset: 6: While processing parseDateTimeBestEffort('20220101-010203'). (CANNOT_PARSE_DATETIME)
```
{
                    readDecimalNumber<2>(time_zone_offset_hour, digits);
                    readDecimalNumber<2>(time_zone_offset_minute, digits + 2);
                }
                else if (num_digits == 3)
                {
                    readDecimalNumber<1>(time_zone_offset_hour, digits);
                    readDecimalNumber<2>(time_zone_offset_minute, digits + 1);
                }
                else if (num_digits == 2)
                {
                    readDecimalNumber<2>(time_zone_offset_hour, digits);
                }
                else if (num_digits == 1)
                {
                    readDecimalNumber<1>(time_zone_offset_hour, digits);
                }
                else
                    return on_error("Cannot read DateTime: unexpected number of decimal digits for time zone offset: " + toString(num_digits), ErrorCodes::CANNOT_PARSE_DATETIME);
                if (num_digits < 3 && checkChar(':', in))
                {
                    num_digits = readDigits(digits, sizeof(digits), in);
                    if (num_digits == 2)
                    {
                        readDecimalNumber<2>(time_zone_offset_minute, digits);
                    }
                    else if (num_digits == 1)
                    {
                        readDecimalNumber<1>(time_zone_offset_minute, digits);
                    }