build(deps): bump gopkg.in/yaml.v2 from 2.2.1 to 2.2.2

Bumps [gopkg.in/yaml.v2](https://github.com/go-yaml/yaml) from 2.2.1 to 2.2.2.
- [Release notes](https://github.com/go-yaml/yaml/releases)
- [Commits](https://github.com/go-yaml/yaml/compare/v2.2.1...v2.2.2)

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

Gopkg.lock

@@ -412,12 +412,12 @@
   revision = "275e9df93516fc27a998eca24c8f1cca277ce5bf"
 
 [[projects]]
-  digest = "1:342378ac4dcb378a5448dd723f0784ae519383532f5e70ade24132c4c8693202"
+  digest = "1:4d2e5a73dc1500038e504a8d78b986630e3626dc027bc030ba5c75da257cdb96"
   name = "gopkg.in/yaml.v2"
   packages = ["."]
   pruneopts = "UT"
-  revision = "5420a8b6744d3b0345ab293f6fcba19c978f1183"
-  version = "v2.2.1"
+  revision = "51d6538a90f86fe93ac480b35f37b2be17fef232"
+  version = "v2.2.2"
 
 [solve-meta]
   analyzer-name = "dep"

Gopkg.toml

@@ -103,7 +103,7 @@
 
 [[constraint]]
   name = "gopkg.in/yaml.v2"
-  version = "=2.2.1"
+  version = "=2.2.2"
 
 [prune]
   go-tests = true