[renovate] Update module github.com/lesismal/nbio to v1.3.21

This MR contains the following updates:

Package	Type	Update	Change
github.com/lesismal/nbio	require	patch	v1.3.20 -> v1.3.21

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go.mod

@@ -93,7 +93,7 @@ require (
 	github.com/bufbuild/protovalidate-go v0.4.3
 	github.com/hashicorp/go-multierror v1.1.1
 	github.com/hashicorp/go-plugin v1.4.10
-	github.com/lesismal/nbio v1.3.20
+	github.com/lesismal/nbio v1.3.21
 	google.golang.org/genproto/googleapis/api v0.0.0-20231212172506-995d672761c0
 )