Update androidx.navigation to v2.8.0 (#362)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
|
[androidx.navigation:navigation-testing](https://developer.android.com/jetpack/androidx/releases/navigation#2.8.0)
([source](https://cs.android.com/androidx/platform/frameworks/support))
| `2.7.7` -> `2.8.0` |
[![age](https://developer.mend.io/api/mc/badges/age/maven/androidx.navigation:navigation-testing/2.8.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/androidx.navigation:navigation-testing/2.8.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/androidx.navigation:navigation-testing/2.7.7/2.8.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/androidx.navigation:navigation-testing/2.7.7/2.8.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
|
[androidx.navigation:navigation-compose](https://developer.android.com/jetpack/androidx/releases/navigation#2.8.0)
([source](https://cs.android.com/androidx/platform/frameworks/support))
| `2.7.7` -> `2.8.0` |
[![age](https://developer.mend.io/api/mc/badges/age/maven/androidx.navigation:navigation-compose/2.8.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/androidx.navigation:navigation-compose/2.8.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/androidx.navigation:navigation-compose/2.7.7/2.8.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/androidx.navigation:navigation-compose/2.7.7/2.8.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

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gradle/libs.versions.toml

@@ -5,7 +5,7 @@ android-minSdk = "26"
 android-targetSdk = "34"
 androidx-activity = "1.9.2"
 androidx-lifecycle = "2.8.5" # 2.8.0 requires compose 1.7 which is not yet stable.
-androidx-navigation = "2.7.7"
+androidx-navigation = "2.8.0"
 androidx-paging = "3.3.2"
 androidx-test = "1.6.1"
 androidx-testEspresso = "3.6.1"