chore: release 0.1.8

Signed-off-by: black-desk <me@black-desk.cn>

Makefile

@@ -10,7 +10,7 @@ GO_MAIN_PACKAGE_DIR = ./cmd/cgtproxy
 # NOTE:
 # These version variable initialization assumes that
 # you are using POSIX compatible SHELL.
-PROJECT_VERSION = 0.1.7
+PROJECT_VERSION = 0.1.8
 PROJECT_GIT_DESCRIBE = $(shell git describe --tags --match v* --long --dirty)
 PROJECT_SEMVER_GENERATED_FROM_GIT_DESCRIBE = $(shell \
 	printf '%s\n' "$(PROJECT_GIT_DESCRIBE)" | \