Update dependency androidx.compose.material:material to v1.6.8 (#243)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

gradle/libs.versions.toml

@@ -72,7 +72,7 @@ composeKotlinCompilerExtension = "1.5.9"
 # https://google.github.io/accompanist/
 accompanistVersion = "0.34.0"
 # https://developer.android.com/jetpack/androidx/releases/compose-material
-materialCompose = "1.6.4"
+materialCompose = "1.6.8"
 # https://github.com/raamcosta/compose-destinations/releases
 composeDestinations = "1.10.2"
 # https://developer.android.com/jetpack/androidx/releases/hilt