chore: bump to 0.4.8

Author: ym

Makefile

@@ -2,8 +2,8 @@ BRANCH    := $(shell git rev-parse --abbrev-ref HEAD)
 BUILDDATE := $(shell date -u +%FT%T%z)
 BUILDTS   := $(shell date -u +%s)
 REVISION  := $(shell git rev-parse HEAD)
-VERSION_DEV := 0.4.8-dev$(shell date +%Y%m%d%H%M)
-VERSION := 0.4.7
+VERSION_DEV := 0.4.9-dev$(shell date +%Y%m%d%H%M)
+VERSION := 0.4.8
 
 PROMETHEUS_TAG := github.com/prometheus/common/version
 KVM_PKG_NAME := github.com/jetkvm/kvm