CDK low-code: fix slices gap

[artem1205]

What

during slicing we lose 1 day, example:

Processing stream slices for coupons (sync_mode: incremental)", 
"data": {"stream_slices": 
"[{'start_time': '2022-11-01T00:00:00', 'end_time': '2022-11-30T00:00:00'}, 
{'start_time': '2022-12-01T00:00:00', 'end_time': '2022-12-15T00:08:21'}]"}}

How

remove timedelta 1 day

Recommended reading order

1. x.java
2. y.python

🚨 User Impact 🚨

Are there any breaking changes? What is the end result perceived by the user? If yes, please merge this PR with the 🚨🚨 emoji so changelog authors can further highlight this if needed.

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