Seconds and microseconds are missing from the formatted timezone offset

[Delgan]

Comparing native with Loguru formatting:

from datetime import timedelta, timezone
from loguru import logger
import sys

offset = timedelta(hours=3, minutes=30, seconds=1, milliseconds=456)

logger = logger.patch(
    lambda record: record.update(time=record["time"].replace(tzinfo=timezone(offset)))
)

logger.remove()
logger.add(sys.stderr, format="[Native] {time:%Y-%m-%d %H-%M-%S %z} {message}")
logger.add(sys.stderr, format="[Loguru] {time:YYYY-MM-DD HH:mm:ss ZZ} {message}")
logger.info("Test")

Output:

[Native] 2023-08-31 16-26-15 +033001.456000 Test
[Loguru] 2023-08-31 16:26:15 +0330 Test

This is likely not a significant issue in practice since there is no official timezone offset that requires accuracy down to the second. However, it's better to address this for the sake of correctness and to align with the standard library.