Bump github.com/chrislusf/raft from 1.0.7 to 1.0.8

Bumps [github.com/chrislusf/raft](https://github.com/chrislusf/raft) from 1.0.7 to 1.0.8.
- [Release notes](https://github.com/chrislusf/raft/releases)
- [Commits](https://github.com/chrislusf/raft/compare/v1.0.7...v1.0.8)

---
updated-dependencies:
- dependency-name: github.com/chrislusf/raft
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -16,7 +16,7 @@ require (
 	github.com/bwmarrin/snowflake v0.3.0
 	github.com/cespare/xxhash v1.1.0
 	github.com/cespare/xxhash/v2 v2.1.2 // indirect
-	github.com/chrislusf/raft v1.0.7
+	github.com/chrislusf/raft v1.0.8
 	github.com/colinmarc/hdfs/v2 v2.3.0
 	github.com/coreos/go-semver v0.3.0 // indirect
 	github.com/coreos/go-systemd/v22 v22.3.2 // indirect