chore(deps): update @angular to v8.2.11

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
@angular/animations	dependencies	patch	8.2.10 -> 8.2.11
@angular/common	dependencies	patch	8.2.10 -> 8.2.11
@angular/compiler	dependencies	patch	8.2.10 -> 8.2.11
@angular/core	dependencies	patch	8.2.10 -> 8.2.11
@angular/forms	dependencies	patch	8.2.10 -> 8.2.11
@angular/platform-browser	dependencies	patch	8.2.10 -> 8.2.11
@angular/platform-browser-dynamic	dependencies	patch	8.2.10 -> 8.2.11
@angular/router	dependencies	patch	8.2.10 -> 8.2.11

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Release Notes

angular/angular

### [`v8.2.11`](https://togithub.com/angular/angular/blob/master/CHANGELOG.md#​8211httpsgithubcomangularangularcompare82108211-2019-10-15) ##### Bug Fixes - **service-worker:** continue serving api requests on cache failure ([#​33165](https://togithub.com/angular/angular/issues/33165)) ([a2716ac](https://togithub.com/angular/angular/commit/a2716ac)), closes [#​32996](https://togithub.com/angular/angular/issues/32996) [#​21412](https://togithub.com/angular/angular/issues/21412)

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