chore(deps): bump github.com/ulikunitz/xz from 0.5.6 to 0.5.7 (#1444)

Bumps [github.com/ulikunitz/xz](https://github.com/ulikunitz/xz) from 0.5.6 to 0.5.7.
- [Release notes](https://github.com/ulikunitz/xz/releases)
- [Commits](ulikunitz/xz@v0.5.6...v0.5.7)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

go.mod

@@ -19,7 +19,7 @@ require (
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/pkg/errors v0.9.1
 	github.com/stretchr/testify v1.5.1
-	github.com/ulikunitz/xz v0.5.6
+	github.com/ulikunitz/xz v0.5.7
 	github.com/xanzy/go-gitlab v0.29.0
 	gocloud.dev v0.19.0
 	golang.org/x/net v0.0.0-20200114155413-6afb5195e5aa // indirect

go.sum

@@ -214,6 +214,8 @@ github.com/tj/go-kinesis v0.0.0-20171128231115-08b17f58cb1b/go.mod h1:/yhzCV0xPf
 github.com/tj/go-spin v1.1.0/go.mod h1:Mg1mzmePZm4dva8Qz60H2lHwmJ2loum4VIrLgVnKwh4=
 github.com/ulikunitz/xz v0.5.6 h1:jGHAfXawEGZQ3blwU5wnWKQJvAraT7Ftq9EXjnXYgt8=
 github.com/ulikunitz/xz v0.5.6/go.mod h1:2bypXElzHzzJZwzH67Y6wb67pO62Rzfn7BSiF4ABRW8=
+github.com/ulikunitz/xz v0.5.7 h1:YvTNdFzX6+W5m9msiYg/zpkSURPPtOlzbqYjrFn7Yt4=
+github.com/ulikunitz/xz v0.5.7/go.mod h1:nbz6k7qbPmH4IRqmfOplQw/tblSgqTqBwxkY0oWt/14=
 github.com/xanzy/go-gitlab v0.29.0 h1:9tMvAkG746eIlzcdpnRgpcKPA1woUDmldMIjR/E5OWM=
 github.com/xanzy/go-gitlab v0.29.0/go.mod h1:sPLojNBn68fMUWSxIJtdVVIP8uSBYqesTfDUseX11Ug=
 github.com/xi2/xz v0.0.0-20171230120015-48954b6210f8 h1:nIPpBwaJSVYIxUFsDv3M8ofmx9yWTog9BfvIu0q41lo=