build(deps): bump github.com/xanzy/go-gitlab from 0.20.0 to 0.21.0

Bumps [github.com/xanzy/go-gitlab](https://github.com/xanzy/go-gitlab) from 0.20.0 to 0.21.0.
- [Release notes](https://github.com/xanzy/go-gitlab/releases)
- [Changelog](https://github.com/xanzy/go-gitlab/blob/master/CHANGELOG.md)
- [Commits](https://github.com/xanzy/go-gitlab/compare/v0.20.0...v0.21.0)

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

2 files changed, 4 insertions, 4 deletions

diff --git a/Gopkg.lock b/Gopkg.lock
index 1e499fe9..90f03d57 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -345,12 +345,12 @@
   version = "v1.0.0"
 
 [[projects]]
-  digest = "1:4df0865c985d97d4b9a0167cd4479ae65771b311eb01129d327b18c36cd2cdbc"
+  digest = "1:766db8705204fd893db77ff5fde228362fbceac616b87ccb9976518095aac8ce"
   name = "github.com/xanzy/go-gitlab"
   packages = ["."]
   pruneopts = "UT"
-  revision = "fcd8d439c0592fd6f8720585994e7e10323be78a"
-  version = "v0.20.0"
+  revision = "87a6b9db49fa4bd6efeaeec450b0c5661f94fcb5"
+  version = "v0.21.0"
 
 [[projects]]
   branch = "master"
diff --git a/Gopkg.toml b/Gopkg.toml
index 72eebde5..a428f904 100644
--- a/Gopkg.toml
+++ b/Gopkg.toml
@@ -74,7 +74,7 @@
 
 [[constraint]]
   name = "github.com/xanzy/go-gitlab"
-  version = "0.20.0"
+  version = "0.21.0"
 
 [[constraint]]
   branch = "master"