Bump composeVersion from 1.1.1 to 1.6.8

[dependabot[bot]]

Bumps composeVersion from 1.1.1 to 1.6.8. Updates androidx.compose.ui:ui from 1.1.1 to 1.6.8

Updates androidx.compose.material:material from 1.1.1 to 1.6.8

Updates androidx.compose.ui:ui-tooling-preview from 1.1.1 to 1.6.8

Updates androidx.compose.ui:ui-test-junit4 from 1.1.1 to 1.6.8

Updates androidx.compose.ui:ui-tooling from 1.1.1 to 1.6.8

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[dependabot[bot]]

Superseded by #396.