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_load_test.go

@@ -77,7 +77,7 @@ var loadScenarios = []expressionScenario{
 		document:       `{something: {file: "thing.yml"}, over: {here: [{file: "thing.yml"}]}}`,
 		expression:     `(.. | select(has("file"))) |= load("../../examples/" + .file)`,
 		expected: []string{
-			"D0, P[], (!!map)::{something: {a: apple is included, b: cool.}, over: {here: [{a: apple is included, b: cool.}]}}\n",
+			"D0, P[], (!!map)::{something: {a: apple is included, b: cool.}, over: {here: [{a: apple is included,\n                b: cool.}]}}\n",
 		},
 	},
 	{