add release note for v0.37.1 (#2507)

Release.md

@@ -0,0 +1,5 @@
+### Fix
+
+* Plugin `https2https` not work.
+* `context canceled` problem for `http_proxy` plugin when multiple requests reuse same connection.
+* In some cases, frps can't get server name for `https` proxy.

pkg/util/version/version.go

@@ -19,7 +19,7 @@ import (
 	"strings"
 )
 
-var version string = "0.37.0"
+var version string = "0.37.1"
 
 func Full() string {
 	return version