Bump gopkg.in/yaml.v2 from 2.2.5 to 2.2.7 (#6)

Bumps [gopkg.in/yaml.v2](https://github.com/go-yaml/yaml) from 2.2.5 to 2.2.7.
- [Release notes](https://github.com/go-yaml/yaml/releases)
- [Commits](go-yaml/yaml@v2.2.5...v2.2.7)

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

Author: dependabot-preview[bot]

go.mod

@@ -7,5 +7,5 @@ require (
 	github.com/jroimartin/gocui v0.4.0
 	github.com/nsf/termbox-go v0.0.0-20190817171036-93860e161317 // indirect
 	github.com/shilangyu/gocui-widgets v1.3.1
-	gopkg.in/yaml.v2 v2.2.5
+	gopkg.in/yaml.v2 v2.2.7
 )

go.sum

@@ -16,3 +16,5 @@ gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.5 h1:ymVxjfMaHvXD8RqPRmzHHsB3VvucivSkIAvJFDI5O3c=
 gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.7 h1:VUgggvou5XRW9mHwD/yXxIYSMtY0zoKQf/v226p2nyo=
+gopkg.in/yaml.v2 v2.2.7/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=