Kotlin 2.0.0-RC1 Gradle plugin incompatibility

[gabrielittner]

When using Kotlin 2.0.0-RC1 with useKsp it will fail with:

java.lang.NoClassDefFoundError: org/jetbrains/kotlin/gradle/plugin/mpp/pm20/util/TargetsKt
        at com.squareup.anvil.plugin.AnvilExtension$useKsp$willHaveDaggerFactories$1.invoke(AnvilExtension.kt:205)
        at com.squareup.anvil.plugin.AnvilExtension$useKsp$willHaveDaggerFactories$1.invoke(AnvilExtension.kt:202)
        at com.squareup.anvil.plugin.AnvilExtension.useKsp$lambda$4(AnvilExtension.kt:202)

The used targets extension method still exists in but the file name changed which leads to the NoClassDefFoundError. Since it's deprecated now and since the replacement is internal it's probably best to just directly replace it

[gabrielittner]

Fixed by #961