Fix for #2677 (#2705)

* Update docs given https://github.com/yaml/go-yaml/pull/348

* Fix for https://github.com/mikefarah/yq/issues/2677

Depends on https://github.com/yaml/go-yaml/pull/348

* Test for https://github.com/mikefarah/yq/issues/2677

* Remove redundant check and add test case for explicit `!!merge` on `*+` traversal

* Bump go.yaml.in/yaml/v4 from 4.0.0-rc.4 to 4.0.0-rc.5

pkg/yqlib/operator_multiply.go

@@ -189,10 +189,6 @@ func mergeObjects(d *dataTreeNavigator, context Context, lhs *CandidateNode, rhs
 
 		log.Debugf("going to applied assignment to LHS: %v with RHS: %v", NodeToString(lhs), NodeToString(candidate))
 
-		if candidate.Tag == "!!merge" {
-			continue
-		}
-
 		err := applyAssignment(d, context, pathIndexToStartFrom, lhs, candidate, preferences)
 		if err != nil {
 			return nil, err