Update angular monorepo to v15.2.8

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@angular/compiler	15.2.7 -> 15.2.8
@angular/compiler-cli (source)	15.2.7 -> 15.2.8
@angular/core	15.2.7 -> 15.2.8

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Release Notes

angular/angular

### [`v15.2.8`](https://togithub.com/angular/angular/blob/HEAD/CHANGELOG.md#​1528-2023-04-19) [Compare Source](https://togithub.com/angular/angular/compare/15.2.7...15.2.8) ##### core | Commit | Type | Description | | -- | -- | -- | | [2fff8fadbe](https://togithub.com/angular/angular/commit/2fff8fadbeff9df3bc09b8847dbf08febbe3b5f8) | fix | handle invalid classes in class array bindings ([#​49924](https://togithub.com/angular/angular/pull/49924)) | ##### http | Commit | Type | Description | | -- | -- | -- | | [05a0225deb](https://togithub.com/angular/angular/commit/05a0225deb126849f3798e828f6dbef7c221ec57) | fix | prevent headers from throwing an error when initializing numerical values ([#​49379](https://togithub.com/angular/angular/pull/49379)) | ##### router | Commit | Type | Description | | -- | -- | -- | | [09a42d988e](https://togithub.com/angular/angular/commit/09a42d988e654825648205c8df90f7ca4d034c74) | fix | canceledNavigationResolution: 'computed' with redirects to the current URL ([#​49793](https://togithub.com/angular/angular/pull/49793)) |

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