Fix DateTime with ZoneId unpacking (#1098)

The timezone offset was miss-calculated because of an error on extracting timezone information when the hour equals to `0`.
The problems happens because `Intl.DateTimeFormat` when configured with `hour12: false` returns `0` hour as `24`.

The solution for this is convert `24` to `0` before calculate the `offset`.

NOTE:
Other valid solution would be change `hourCycle` to `h23`.
However, this solution is not supported by all javascript environment.

packages/bolt-connection/src/packstream/packstream-utc.js

@@ -279,6 +279,8 @@ export function packDateTime (value, packer) {
         currentValue.value.toUpperCase() === 'B'
           ? year => year.subtract(1).negate() // 1BC equals to year 0 in astronomical year numbering
           : year => year
+    } else if (currentValue.type === 'hour') {
+       obj.hour = int(currentValue.value).modulo(24)
     } else if (currentValue.type !== 'literal') {
        obj[currentValue.type] = int(currentValue.value)
      }