chore(deps): update angular-cli monorepo to v21.2.9

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@angular-devkit/build-angular	21.2.8 → 21.2.9
@angular/cli	21.2.8 → 21.2.9

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Release Notes

angular/angular-cli (@​angular-devkit/build-angular)

v21.2.9

Compare Source

@​angular/cli

Commit	Type	Description
233deef01	fix	fix broken img ref in ai-tutor
7cea9885c	fix	introduce initial package manager workspace awareness
5b1a5b743	fix	remove standalone true ref in ai tutor

@​schematics/angular

Commit	Type	Description
e7abeb5c7	fix	add missing imports for focus and skip APIs in refactor-jasmine-vitest

@​angular/ssr

Commit	Type	Description
94023f62c	fix	introduce trustProxyHeaders option to safely validate and sanitize proxy headers
5ffe5c309	fix	add support for configuring trusted proxy headers via environment variable
930ada9b7	fix	decode route segments when building and matching route tree
0dc8a440c	fix	use router to normalize URLs for comparison

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