Support Gradle's isolated projects feature

**Is your feature request related to a problem? Please describe.**
I wanted to run the plugin with Gradle `9.7.0` new incubating feature (moved from experimental) => isolated projects.
I applied it to the root project like written in the docs - this however fails with:

```
* What went wrong:
An exception occurred applying plugin request [id: 'com.deezer.caupain', version: '1.9.1']
> Failed to apply plugin 'com.deezer.caupain'.
> Project ':' cannot access 'Project.afterEvaluate' functionality on subprojects via 'allprojects'
```

**Describe the solution you'd like**
Would be nice if the plugin would work with isolated projects enabled.