Update all dependencies

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
@angular-devkit/build-angular	devDependencies	patch	^0.803.20 -> ^0.803.21
@angular-devkit/build-ng-packagr	devDependencies	patch	~0.803.20 -> ~0.803.21
@angular/cli	devDependencies	patch	~8.3.20 -> ~8.3.21
core-js	dependencies	patch	^3.6.0 -> ^3.6.1

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Release Notes

angular/angular-cli

v8.3.21

Compare Source

Commits

@​angular-devkit/build-angular (0.803.21)
Commit	Description	Notes
	properly process es2016+ targets with differential loading cache
	prevent double sourcemap processing
	revert temporary TypeScript based differential loading

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Special Thanks

Charles Lyding, Renovate Bot, vikerman

zloirock/core-js

v3.6.1

Compare Source

• Fixed a bug related Symbol with multiple copies of core-js (for 3.4.2-3.6.0), #​736
• Refactored some tools

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