Made the EitherAssert extending the AbstractObjectAssert class

Author: rcardin-lm

src/main/kotlin/in/rcard/assertj/arrowcore/AbstractEitherAssert.kt

@@ -1,7 +1,7 @@
 package `in`.rcard.assertj.arrowcore
 
 import arrow.core.Either
-import org.assertj.core.api.AbstractAssert
+import org.assertj.core.api.AbstractObjectAssert
 
 abstract class AbstractEitherAssert<SELF : AbstractEitherAssert<SELF, LEFT, RIGHT>, LEFT, RIGHT>(either: Either<LEFT, RIGHT>?) :
-    AbstractAssert<SELF, Either<LEFT, RIGHT>>(either, AbstractEitherAssert::class.java)
+    AbstractObjectAssert<SELF, Either<LEFT, RIGHT>>(either, AbstractEitherAssert::class.java)