fix(deps): update dependency date-fns to ^2.7.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
date-fns	dependencies	minor	^2.6.0 -> ^2.7.0

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Release Notes

date-fns/date-fns

### [`v2.7.0`](https://togithub.com/date-fns/date-fns/blob/master/CHANGELOG.md#​270---2019-11-07) [Compare Source](https://togithub.com/date-fns/date-fns/compare/v2.6.0...v2.7.0) Thanks to [@​mzgajner](https://togithub.com/mzgajner), [@​NaridaL](https://togithub.com/NaridaL), [@​Zyten](https://togithub.com/Zyten), [@​leshakoss](https://togithub.com/leshakoss), [@​fintara](https://togithub.com/fintara), [@​kpr-hellofresh](https://togithub.com/kpr-hellofresh) for contributing to the release. ##### Fixed - [Fixed a mistake in the Slovenian locale](https://togithub.com/date-fns/date-fns/pull/1529). - [Fixed incorrect behavior of `parseISO` in Firefox caused by differences in `getTimezoneOffset`](https://togithub.com/date-fns/date-fns/pull/1495). ##### Changed - [Make object arguments types more elaborate in Flow type definitions](https://togithub.com/date-fns/date-fns/pull/1519). - [Get rid of deprecated Function in Flow type definitions](https://togithub.com/date-fns/date-fns/pull/1520). - [Allow `parseJSON` to accept strings without trailing 'Z' symbol and with up to 6 digits in the milliseconds' field](https://togithub.com/date-fns/date-fns/pull/1499). ##### Added - [Added Bulgarian (bg) locale](https://togithub.com/date-fns/date-fns/pull/1522).

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