fix(deps): update patch version up to v1.6.8

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
androidx.compose.ui:ui-test-manifest (source)	1.6.7 -> 1.6.8
androidx.compose.ui:ui-test-junit4 (source)	1.6.7 -> 1.6.8
androidx.compose.ui:ui-tooling (source)	1.6.7 -> 1.6.8
androidx.compose.ui:ui-tooling-preview (source)	1.6.7 -> 1.6.8
androidx.compose.foundation:foundation (source)	1.6.7 -> 1.6.8

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Snapshot diff report vs base branch: main	File name	Image
jp.co.yumemi.codeche ck.ui.search.SearchC ontentTest.defaultSt ate_has_empty_text_c ompare.png
jp.co.yumemi.codeche ck.ui.detail.Reposit oryDetailContentTest .default_compare.png
jp.co.yumemi.codeche ck.ui.search.SearchC ontentTest.inputText _then_clear_button_e xist_compare.png