fix(deps): update composeuiversion to v1.6.8 (#23)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [androidx.compose.ui:ui-test-manifest](https://developer.android.com/jetpack/androidx/releases/compose-ui#1.6.8) ([source](https://cs.android.com/androidx/platform/frameworks/support)) | `1.3.2` -> `1.6.8` | [![age](https://developer.mend.io/api/mc/badges/age/maven/androidx.compose.ui:ui-test-manifest/1.6.8?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/androidx.compose.ui:ui-test-manifest/1.6.8?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/androidx.compose.ui:ui-test-manifest/1.3.2/1.6.8?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/androidx.compose.ui:ui-test-manifest/1.3.2/1.6.8?slim=true)](https://docs.renovatebot.com/merge-confidence/) |
| [androidx.compose.ui:ui-tooling](https://developer.android.com/jetpack/androidx/releases/compose-ui#1.6.8) ([source](https://cs.android.com/androidx/platform/frameworks/support)) | `1.3.2` -> `1.6.8` | [![age](https://developer.mend.io/api/mc/badges/age/maven/androidx.compose.ui:ui-tooling/1.6.8?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/androidx.compose.ui:ui-tooling/1.6.8?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/androidx.compose.ui:ui-tooling/1.3.2/1.6.8?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/androidx.compose.ui:ui-tooling/1.3.2/1.6.8?slim=true)](https://docs.renovatebot.com/merge-confidence/) |
| [androidx.compose.ui:ui-test-junit4](https://developer.android.com/jetpack/androidx/releases/compose-ui#1.6.8) ([source](https://cs.android.com/androidx/platform/frameworks/support)) | `1.3.2` -> `1.6.8` | [![age](https://developer.mend.io/api/mc/badges/age/maven/androidx.compose.ui:ui-test-junit4/1.6.8?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/androidx.compose.ui:ui-test-junit4/1.6.8?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/androidx.compose.ui:ui-test-junit4/1.3.2/1.6.8?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/androidx.compose.ui:ui-test-junit4/1.3.2/1.6.8?slim=true)](https://docs.renovatebot.com/merge-confidence/) |
| [androidx.compose.ui:ui-tooling-preview](https://developer.android.com/jetpack/androidx/releases/compose-ui#1.6.8) ([source](https://cs.android.com/androidx/platform/frameworks/support)) | `1.3.2` -> `1.6.8` | [![age](https://developer.mend.io/api/mc/badges/age/maven/androidx.compose.ui:ui-tooling-preview/1.6.8?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/androidx.compose.ui:ui-tooling-preview/1.6.8?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/androidx.compose.ui:ui-tooling-preview/1.3.2/1.6.8?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/androidx.compose.ui:ui-tooling-preview/1.3.2/1.6.8?slim=true)](https://docs.renovatebot.com/merge-confidence/) |
| [androidx.compose.ui:ui](https://developer.android.com/jetpack/androidx/releases/compose-ui#1.6.8) ([source](https://cs.android.com/androidx/platform/frameworks/support)) | `1.3.2` -> `1.6.8` | [![age](https://developer.mend.io/api/mc/badges/age/maven/androidx.compose.ui:ui/1.6.8?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/androidx.compose.ui:ui/1.6.8?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/androidx.compose.ui:ui/1.3.2/1.6.8?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/androidx.compose.ui:ui/1.3.2/1.6.8?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

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Author: renovate[bot]

build.gradle.kts

@@ -2,7 +2,7 @@ import java.io.FileInputStream
 import java.util.*
 
 buildscript {
-    val composeUiVersion by extra("1.3.2")
+    val composeUiVersion by extra("1.6.8")
 }
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 plugins {