⚡ Incremental sync pulls too much leaves from Alibeez

[hgwood]

After an incremental sync, the connector saves the current date-time and uses it on the next sync to filter the leaves on their update date. The format of the date-time used by the connector is ISO 8601 with a trailing Z to denote the use of UTC, however Alibeez seems to still interpret the date-time as a local one. This means, for the case of France in the summer, that the connector pulls 2-hour worth of leaves that were already pulled at the last sync.

The proposed solution is to save the update date of the last leave that was sync'd, instead of the current date-time.

[zigarn]

What about using "+0000" instead of "Z"? Maybe Alibeez will interpret it better?

[hgwood]

Maybe but it does not really matter since the solution should remove the problem of interpretation entirely. Though we still have to experiment how it works when pulling leaves from multiple Alibeez tenants that might not use the same reference time zone (see also #7).