* bump go to 1.18
Signed-off-by: xixi <i@hexilee.me>

* recheck
Signed-off-by: xixi <i@hexilee.me>

* revert
Signed-off-by: xixi <i@hexilee.me>

* go mod tidy
Signed-off-by: xixi <i@hexilee.me>

* update CHANGELOG
Signed-off-by: xixi <i@hexilee.me>

* update go version in integration test
Signed-off-by: xixi <i@hexilee.me>