iamkun / iamkun/dayjs

Days difference calculation is wrong if the date format is DD-MMM-YY and year is more than 49(2049)

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JavaScript
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Description

**Describe the bug**
const expInDays = dayjs('31-DEC-50').diff(dayjs(), 'day');
Above code considers year as 1950 instead of 2050. same code with 31-DEC-49 considers year as 2049.
DD-MMM-YY format days difference calculation works fine till 2049.

**Expected behavior**
It should calculate days correctly.

**Information**
- Day.js Version 1.11.13
- OS: Windows
- Browser Chrome

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