Support jvmTarget 17

Working workaround:

dependencies {
    detekt("io.gitlab.arturbosch.detekt:detekt-cli:1.19.0")
    detekt("org.jetbrains.kotlin:kotlin-compiler-embeddable:1.6.0")
}

False alarm, it was only happening when I used main-SNAPSHOT, and it looks like the issue is that I set toolVersion to the same version that I use for the dependency, and it didn’t like using main-SNAPSHOT for that. So I changed toolVersion to use 1.20.0-RC2 and then it worked.

It’s a little odd because I made a fresh project with all of the same configuration and it didn’t have this issue. Maybe something weird got stuck in the cache.

Update Updating my project to Kotlin 1.6.20 from 1.6.10 solved the issue. Still weird because the fresh project was also using 1.6.10 and didn’t fail.