Update peter-evans/create-pull-request action to v8

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
peter-evans/create-pull-request	action	major	v7 -> v8

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Release Notes

peter-evans/create-pull-request (peter-evans/create-pull-request)

v8

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Job Summary for Gradle

Check PR :: kotlin-tests

Gradle Root Project	Requested Tasks	Gradle Version	Build Outcome	Build Scan®
develocity-api-kotlin	check	9.1.0	❌
dak-example-gradle-project	dependencies --configuration runtimeClasspath	9.0.0	✅
dak-example-gradle-task-main-…	:buildSrc:dependencies --configuration runtimeClasspath	9.0.0	✅
dak-example-gradle-task-main-…	userBuildPerformanceMetrics --user runner --period=-10h	9.0.0	✅
dak-example-gradle-project	run --args "buildStartTime>-10h buildTool:gradle"	9.0.0	✅
dak-example-gradle-task-build…	:generateExternalPluginSpecBuilders	9.0.0	✅