fix(deps): update angular monorepo to v21.2.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@angular/animations (source)	21.2.0 → 21.2.1
@angular/common (source)	21.2.0 → 21.2.1
@angular/compiler (source)	21.2.0 → 21.2.1
@angular/compiler-cli (source)	21.2.0 → 21.2.1
@angular/core (source)	21.2.0 → 21.2.1
@angular/forms (source)	21.2.0 → 21.2.1
@angular/language-service (source)	21.2.0 → 21.2.1
@angular/platform-browser (source)	21.2.0 → 21.2.1
@angular/platform-browser-dynamic (source)	21.2.0 → 21.2.1
@angular/platform-server (source)	21.2.0 → 21.2.1
@angular/router (source)	21.2.0 → 21.2.1
@angular/service-worker (source)	21.2.0 → 21.2.1

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Release Notes

angular/angular (@​angular/animations)

v21.2.1

Compare Source

core

Commit	Type	Description
e2e9a9a531	fix	adds transfer cache to httpResource to fix hydration
b4ec3cc4e4	fix	prevent child animation elements from being orphaned
e923d88398	fix	Prevent removal of elements during drag and drop

http

Commit	Type	Description
277ade97ac	fix	correctly cache blob responses in transfer cache (#​67002)

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