chore(deps): bump github.com/gin-contrib/cors from 1.3.1 to 1.4.0

Bumps [github.com/gin-contrib/cors](https://github.com/gin-contrib/cors) from 1.3.1 to 1.4.0.
- [Release notes](https://github.com/gin-contrib/cors/releases)
- [Changelog](https://github.com/gin-contrib/cors/blob/master/.goreleaser.yaml)
- [Commits](gin-contrib/cors@v1.3.1...v1.4.0)

---
updated-dependencies:
- dependency-name: github.com/gin-contrib/cors
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

go.mod

@@ -4,26 +4,20 @@ go 1.13
 
 require (
 	github.com/ghodss/yaml v1.0.0
-	github.com/gin-contrib/cors v1.3.1
-	github.com/gin-gonic/gin v1.7.7
+	github.com/gin-contrib/cors v1.4.0
+	github.com/gin-gonic/gin v1.8.1
 	github.com/gobuffalo/packr v1.30.1
-	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/google/go-cmp v0.5.6 // indirect
 	github.com/gorilla/websocket v1.4.2
 	github.com/imdario/mergo v0.3.12
 	github.com/jonboulle/clockwork v0.2.2
-	github.com/json-iterator/go v1.1.12 // indirect
-	github.com/kr/pretty v0.2.0 // indirect
-	github.com/mattn/go-isatty v0.0.14 // indirect
 	github.com/posener/wstest v1.2.0
 	github.com/satori/go.uuid v1.2.0
 	github.com/sirupsen/logrus v1.8.1
 	github.com/spf13/cobra v1.4.0
-	github.com/stretchr/testify v1.7.1
+	github.com/stretchr/testify v1.8.0
 	github.com/warthog618/gpiod v0.6.0
 	golang.org/x/crypto v0.0.0-20210817164053-32db794688a5 // indirect
 	golang.org/x/sys v0.0.0-20211205182925-97ca703d548d // indirect
 	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
-	google.golang.org/protobuf v1.27.1 // indirect
-	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
 )