update release notes (#3347)

Release.md

@@ -1,8 +1,8 @@
 ### New
 
-* Added config `bandwidth_limit_mode` in frpc, default value is `client` which is current behavior. Optional value is `server`, to enable bandwidth limit in server. The major aim is to let server plugin has the ability to modify bandwidth limit for each proxy.
+* The `httpconnect` type in `tcpmux` now supports authentication through the parameters `http_user` and `http_pwd`.
 
-### Improve
+### Improved
 
-* `dns_server` supports ipv6.
-* frpc supports graceful shutdown for protocol `quic`.
+* The web framework has been upgraded to vue3 + element-plus, and the dashboard has added some information display and supports dark mode.
+* The e2e testing has been switched to ginkgo v2.

pkg/util/version/version.go

@@ -19,7 +19,7 @@ import (
 	"strings"
 )
 
-var version = "0.47.0"
+var version = "0.48.0"
 
 func Full() string {
 	return version