move x/exp to the right group

Signed-off-by: spacewander <[email protected]>

go.mod

@@ -29,7 +29,6 @@ require (
 	github.com/spf13/viper v1.18.2
 	github.com/stretchr/testify v1.8.4
 	go.uber.org/zap v1.26.0
-	golang.org/x/exp v0.0.0-20231219180239-dc181d75b848 // indirect
 	golang.org/x/time v0.5.0
 	google.golang.org/genproto/googleapis/api v0.0.0-20231106174013-bbf56f31fb17
 	google.golang.org/grpc v1.61.0
@@ -114,6 +113,7 @@ require (
 	go.opentelemetry.io/otel/sdk v1.21.0 // indirect
 	go.opentelemetry.io/otel/trace v1.21.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
+	golang.org/x/exp v0.0.0-20231219180239-dc181d75b848 // indirect
 	golang.org/x/net v0.19.0 // indirect
 	golang.org/x/oauth2 v0.15.0 // indirect
 	golang.org/x/sync v0.5.0 // indirect