chore(deps): update dependency core-js to v2.6.5 - autoclosed

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change	References
core-js	dependencies	patch	2.6.3 -> 2.6.5	source

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Release Notes

zloirock/core-js

### [`v2.6.5`](https://togithub.com/zloirock/core-js/blob/master/CHANGELOG.md#​265---20190215) [Compare Source](https://togithub.com/zloirock/core-js/compare/v2.6.4...v2.6.5) - Fixed buggy `String#padStart` and `String#padEnd` mobile Safari implementations, [#​414](https://togithub.com/zloirock/core-js/issues/414). ### [`v2.6.4`](https://togithub.com/zloirock/core-js/blob/master/CHANGELOG.md#​264---20190207) [Compare Source](https://togithub.com/zloirock/core-js/compare/v2.6.3...v2.6.4) - Added a workaround against crushing an old IE11.0.9600.16384 build, [#​485](https://togithub.com/zloirock/core-js/issues/485).

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