build: bump Gradle from `8.5` to `8.7`

[valfirst]

Change list

Bump Gradle from 8.5 to 8.7 https://docs.gradle.org/8.7/release-notes.html

Types of changes

What types of changes are you proposing/introducing to Java client? Put an x in the boxes that apply

• [x] No changes in production code.
• [ ] Bugfix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

[mykola-mokhnach]

Let bump the selenium dependency first and then rebase: https://github.com/appium/java-client/actions/runs/8447572063/job/23140046275?pr=2140#step:13:61