Bump github.com/echocat/slf4g from 1.5.3 to 1.6.0

Bumps [github.com/echocat/slf4g](https://github.com/echocat/slf4g) from 1.5.3 to 1.6.0.
- [Release notes](https://github.com/echocat/slf4g/releases)
- [Commits](echocat/slf4g@v1.5.3...v1.6.0)

---
updated-dependencies:
- dependency-name: github.com/echocat/slf4g
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

go.mod

@@ -2,7 +2,7 @@ module github.com/echocat/goxr
 
 require (
 	github.com/c2h5oh/datasize v0.0.0-20200112174442-28bbd4740fee // performance tests
-	github.com/echocat/slf4g v1.5.3
+	github.com/echocat/slf4g v1.6.0
 	github.com/echocat/slf4g/native v1.6.0
 	github.com/edsrzf/mmap-go v1.1.0
 	github.com/pkg/errors v0.9.1

go.sum

@@ -9,8 +9,8 @@ github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSs
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/echocat/slf4g v0.0.0/go.mod h1:R4ge09pgerMnd/bJQeKVFm4igVYgJW6CqfUOzT/CA10=
-github.com/echocat/slf4g v1.5.3 h1:DdQGyHwdv3+hxRWJh+ZAikUDMVt4TWQg//kcsYJ1SLk=
-github.com/echocat/slf4g v1.5.3/go.mod h1:YvF/d1TcPvT+/xiHStLHPI4xPT1GGeEmPczn2MSljNA=
+github.com/echocat/slf4g v1.6.0 h1:7jUx4P8M87UIWVslSK8nYZwS4HT7sh5WBwstab4EDZA=
+github.com/echocat/slf4g v1.6.0/go.mod h1:YvF/d1TcPvT+/xiHStLHPI4xPT1GGeEmPczn2MSljNA=
 github.com/echocat/slf4g/native v1.6.0 h1:kLVjwVps5gf4xoVQJQXBR+pYbRF+ZmuVuqMJGerZ0aY=
 github.com/echocat/slf4g/native v1.6.0/go.mod h1:Ueg542Lc2H1U7g0PqIHpZj39RPau4k0qbVTVTxNrbKA=
 github.com/edsrzf/mmap-go v1.1.0 h1:6EUwBLQ/Mcr1EYLE4Tn1VdW1A4ckqCQWZBw8Hr0kjpQ=