Fix MethodHandle.invoke and MethodHandle.invokeExact are only supported starting with Android O (--min-api 26)

[riodevista]

I get this exception when try to compile android app with minSdk=24

Caused by: [CIRCULAR REFERENCE: com.android.tools.r8.internal.g: MethodHandle.invoke and MethodHandle.invokeExact are only supported starting with Android O (--min-api 26):

Upping minSdk to 26 solves the problem but it would be great if you adjust these invocations and the lib supports 24 sdk (or even 21 is better).