dependencies: ginkgo v2.9.1, gomega v1.27.4

They contain some nice-to-have improvements (for example, better printing of
errors with gomega/format.Object) but nothing that is critical right now.

"go mod tidy" was run manually in
staging/src/k8s.io/kms/internal/plugins/mock (https://github.com/kubernetes/kubernetes/pull/116613
not merged yet).

vendor/github.com/onsi/gomega/internal/async_assertion.go

@@ -412,7 +412,7 @@ func (assertion *AsyncAssertion) match(matcher types.GomegaMatcher, desiredMatch
 				message += format.Object(attachment.Object, 1)
 			}
 		} else {
-			message = preamble + "\n" + err.Error() + "\n" + format.Object(err, 1)
+			message = preamble + "\n" + format.Object(err, 1)
 		}
 		return message
 	}
@@ -425,10 +425,18 @@ func (assertion *AsyncAssertion) match(matcher types.GomegaMatcher, desiredMatch
 
 		if actualErr == nil {
 			if matcherErr == nil {
-				if desiredMatch {
-					message += matcher.FailureMessage(actual)
+				if desiredMatch != matches {
+					if desiredMatch {
+						message += matcher.FailureMessage(actual)
+					} else {
+						message += matcher.NegatedFailureMessage(actual)
+					}
 				} else {
-					message += matcher.NegatedFailureMessage(actual)
+					if assertion.asyncType == AsyncAssertionTypeConsistently {
+						message += "There is no failure as the matcher passed to Consistently has not yet failed"
+					} else {
+						message += "There is no failure as the matcher passed to Eventually succeeded on its most recent iteration"
+					}
 				}
 			} else {
 				var fgErr formattedGomegaError