Update androidx.compose.ui.test to v1.7.6

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
androidx.compose.ui:ui-test-junit4 (source)	1.7.5 -> 1.7.6
androidx.compose.ui:ui-test-manifest (source)	1.7.5 -> 1.7.6

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PR-Codex overview

This PR updates the version of androidx-compose-ui-test from 1.7.5 to 1.7.6 in the gradle/libs.versions.toml file.

Detailed summary

• Updated androidx-compose-ui-test from 1.7.5 to 1.7.6.

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