fix(deps): update dependency date-fns to ^2.9.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
date-fns	dependencies	minor	^2.8.1 -> ^2.9.0

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Release Notes

date-fns/date-fns

### [`v2.9.0`](https://togithub.com/date-fns/date-fns/blob/master/CHANGELOG.md#​290---2020-01-08) [Compare Source](https://togithub.com/date-fns/date-fns/compare/v2.8.1...v2.9.0) Thanks to [@​mborgbrant](https://togithub.com/mborgbrant), [@​saintplay](https://togithub.com/saintplay), [@​mrenty](https://togithub.com/mrenty), [@​kibertoad](https://togithub.com/kibertoad), [@​levibuzolic](https://togithub.com/levibuzolic), [@​Anshuman71](https://togithub.com/Anshuman71), [@​talgautb](https://togithub.com/talgautb), [@​filipjuza](https://togithub.com/filipjuza), [@​tobyzerner](https://togithub.com/tobyzerner), [@​emil9453](https://togithub.com/emil9453), [@​fintara](https://togithub.com/fintara), [@​pascaliske](https://togithub.com/pascaliske), [@​rramiachraf](https://togithub.com/rramiachraf), [@​marnusw](https://togithub.com/marnusw) and [@​Imballinst](https://togithub.com/Imballinst) for working on the release. ##### Fixed - [Fixed a bug with addBusinessDays returning the Tuesday when adding 1 day on weekends. Now it returns the Monday](https://togithub.com/date-fns/date-fns/pull/1588). - [Added missing timezone to `formatISO`](https://togithub.com/date-fns/date-fns/pull/1576). - [Removed dots from short day period names in the Kazakh locale](https://togithub.com/date-fns/date-fns/pull/1512). - [Fixed typo in formatDistance in the Czech locale](https://togithub.com/date-fns/date-fns/pull/1540). - [Fixed shortenings in the Bulgarian locale](https://togithub.com/date-fns/date-fns/pull/1560). - [Fixed regex for the May in the Portuguese locale](https://togithub.com/date-fns/date-fns/pull/1565). ##### Added - [Added `eachMonthOfInterval` and `eachYearOfInterval`](https://togithub.com/date-fns/date-fns/pull/618). - [Added `inclusive` option to \`areIntervalsOverlapping](https://togithub.com/date-fns/date-fns/pull/643). - [Added `isExists` function that checks if the given date is exists](https://togithub.com/date-fns/date-fns/pull/682). - [Added `add` function to add seconds, minutes, hours, weeks, years in single call](https://togithub.com/date-fns/date-fns/pull/1581). - [Added `sub` function, the opposite of `add`](https://togithub.com/date-fns/date-fns/pull/1583). - [Added `Duration` type used in `add` and `sub`](https://togithub.com/date-fns/date-fns/pull/1583). - [Added Azerbaijani (az) locale](https://togithub.com/date-fns/date-fns/pull/1547). - [Added Moroccan Arabic (ar-MA) locale](https://togithub.com/date-fns/date-fns/pull/1578). ##### Changed - [Reduced the total minified build size by 1Kb/4%](https://togithub.com/date-fns/date-fns/pull/1563). - [Made all properties in `Locale` type optional](https://togithub.com/date-fns/date-fns/pull/1542). - [Added missing properties to `Locale` type](https://togithub.com/date-fns/date-fns/pull/1542). - [Add the locale code to `Locale` type](https://togithub.com/date-fns/date-fns/pull/1580). - [Added support of space time separator to `parseJSON`](https://togithub.com/date-fns/date-fns/pull/1579). - [Allowed up to 7 digits in milliseconds in `parseJSON`](https://togithub.com/date-fns/date-fns/pull/1579).

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