Bump androidx.navigation:navigation-ui-ktx from 2.6.0 to 2.8.1

Bumps androidx.navigation:navigation-ui-ktx from 2.6.0 to 2.8.1.

---
updated-dependencies:
- dependency-name: androidx.navigation:navigation-ui-ktx
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

app/build.gradle

@@ -80,7 +80,7 @@ dependencies {
     implementation 'com.google.android.material:material:1.9.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
     implementation 'androidx.navigation:navigation-fragment-ktx:2.6.0'
-    implementation 'androidx.navigation:navigation-ui-ktx:2.6.0'
+    implementation 'androidx.navigation:navigation-ui-ktx:2.8.1'
     implementation "androidx.security:security-crypto:1.1.0-alpha06"
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.1.5'