chore(deps): update dependency @angular/core to ^9.1.9

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
@angular/core	peerDependencies	patch	^9.1.7 -> ^9.1.9

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Release Notes

angular/angular

v9.1.9

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This release contains a re-submit of the following 3 commits with fixes for TS 3.8.

Bug Fixes

• elements: capture input properties set before upgrading the element (#​36114) (#​37226) (a33cb2d), closes #​30848 #​31416
• elements: correctly handle getting/setting properties before connecting the element (#​36114) (#​37226) (6ac0042), closes /github.com/angular/angular/pull/31416/files#r300326698
• elements: do not break when the constructor of an Angular Element is not called (#​36114) (#​37226) (1465372)

v9.1.8

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Bug Fixes

• core: Host classes should not be fed back into @Input (#​35889) (f872b69), closes #​35383
• core: inheritance delegate ctor regex updated to work on minified code (#​36962) (e3d3395)
• elements: capture input properties set before upgrading the element (#​36114) (1c8f179), closes #​30848 #​31416
• elements: correctly handle getting/setting properties before connecting the element (#​36114) (363f14c), closes /github.com/angular/angular/pull/31416/files#r300326698
• elements: do not break when the constructor of an Angular Element is not called (#​36114) (87b9f08)
• router: update type for routerLink to include null and undefined (#​37018) (7de7871), closes #​13380 #​36544

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