chore(dependencies): update dependency core-js to 2.6.x - autoclosed

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
core-js	devDependencies	minor	2.5.x -> 2.6.x

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Release Notes

zloirock/core-js

### [`v2.6.10`](https://togithub.com/zloirock/core-js/blob/master/CHANGELOG.md#​2610-LEGACY---20191013) [Compare Source](https://togithub.com/zloirock/core-js/compare/v2.6.9...v2.6.10) - Show similar `postinstall` messages only once per `npm i`, [#​597](https://togithub.com/zloirock/core-js/issues/597) ### [`v2.6.9`](https://togithub.com/zloirock/core-js/blob/master/CHANGELOG.md#​269-LEGACY---20190527) [Compare Source](https://togithub.com/zloirock/core-js/compare/v2.6.8...v2.6.9) - Some fixes and improvements of the `postinstall` script like support `npm` color config ([#​556](https://togithub.com/zloirock/core-js/issues/556)) or adding support of `ADBLOCK` env variable ### [`v2.6.8`](https://togithub.com/zloirock/core-js/blob/master/CHANGELOG.md#​268-LEGACY---20190522) [Compare Source](https://togithub.com/zloirock/core-js/compare/v2.6.7...v2.6.8) - Added a workaround of a strange `npx` bug on `postinstall`, [#​551](https://togithub.com/zloirock/core-js/issues/551) ### [`v2.6.7`](https://togithub.com/zloirock/core-js/blob/master/CHANGELOG.md#​267-LEGACY---20190521) [Compare Source](https://togithub.com/zloirock/core-js/compare/v2.6.6...v2.6.7) - Added one more workaround of alternative not completely correct `Symbol` polyfills, [#​550](https://togithub.com/zloirock/core-js/issues/550), [#​554](https://togithub.com/zloirock/core-js/issues/554) ### [`v2.6.6`](https://togithub.com/zloirock/core-js/blob/master/CHANGELOG.md#​266-LEGACY---20190520) [Compare Source](https://togithub.com/zloirock/core-js/compare/v2.6.5...v2.6.6) - Fixed IE8- non-enumerable properties support in `Object.{ assign, entries, values }`, [#​541](https://togithub.com/zloirock/core-js/issues/541) - Fixed support of primitives in `Object.getOwnPropertySymbols` in Chrome 38 / 39, [#​539](https://togithub.com/zloirock/core-js/issues/539) - Show a message on `postinstall` ### [`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). ### [`v2.6.3`](https://togithub.com/zloirock/core-js/blob/master/CHANGELOG.md#​263---20190122) [Compare Source](https://togithub.com/zloirock/core-js/compare/v2.6.2...v2.6.3) - Added a workaround for `babel-minify` bug, [#​479](https://togithub.com/zloirock/core-js/issues/479) ### [`v2.6.2`](https://togithub.com/zloirock/core-js/blob/master/CHANGELOG.md#​262---20190110) [Compare Source](https://togithub.com/zloirock/core-js/compare/v2.6.1...v2.6.2) - Fixed handling of `$` in `String#replace`, [#​471](https://togithub.com/zloirock/core-js/issues/471) ### [`v2.6.1`](https://togithub.com/zloirock/core-js/blob/master/CHANGELOG.md#​2610-LEGACY---20191013) [Compare Source](https://togithub.com/zloirock/core-js/compare/v2.6.0...v2.6.1) - Show similar `postinstall` messages only once per `npm i`, [#​597](https://togithub.com/zloirock/core-js/issues/597) ### [`v2.6.0`](https://togithub.com/zloirock/core-js/blob/master/CHANGELOG.md#​260---20181205) [Compare Source](https://togithub.com/zloirock/core-js/compare/v2.5.7...v2.6.0) - Add direct `.exec` calling to `RegExp#{@​@​replace, @​@​split, @​@​match, @​@​search}`. Also, added fixes for `RegExp#exec` method. [#​428](https://togithub.com/zloirock/core-js/issues/428), [#​435](https://togithub.com/zloirock/core-js/issues/435), [#​458](https://togithub.com/zloirock/core-js/issues/458), thanks [**@​nicolo-ribaudo**](https://togithub.com/nicolo-ribaudo).

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