build(deps): bump github.com/go-openapi/validate

Bumps [github.com/go-openapi/validate](https://github.com/go-openapi/validate) from 0.0.0-20180110180619-fa47bbf926a7 to 0.22.4.
- [Commits](https://github.com/go-openapi/validate/commits/v0.22.4)

---
updated-dependencies:
- dependency-name: github.com/go-openapi/validate
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

go.mod

@@ -1,39 +1,23 @@
 module github.com/euskadi31/go-server
 
 require (
-	github.com/PuerkitoBio/purell v1.1.0 // indirect
-	github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 // indirect
-	github.com/asaskevich/govalidator v0.0.0-20171111151018-521b25f4b05f // indirect
-	github.com/go-openapi/analysis v0.0.0-20171226173743-0db1e4cf47d6 // indirect
-	github.com/go-openapi/errors v0.0.0-20180827163446-87bb65328877
-	github.com/go-openapi/jsonpointer v0.0.0-20180825180259-52eb3d4b47c6 // indirect
-	github.com/go-openapi/jsonreference v0.0.0-20180825180305-1c6a3fa339f2 // indirect
-	github.com/go-openapi/loads v0.0.0-20171207192234-2a2b323bab96 // indirect
-	github.com/go-openapi/runtime v0.0.0-20171219223354-a76104f379d3 // indirect
-	github.com/go-openapi/spec v0.0.0-20171219195406-fa03337d7da5
-	github.com/go-openapi/strfmt v0.0.0-20171222154016-4dd3d302e100
-	github.com/go-openapi/swag v0.0.0-20180908172849-dd0dad036e67 // indirect
-	github.com/go-openapi/validate v0.0.0-20180110180619-fa47bbf926a7
+	github.com/go-openapi/errors v0.21.0
+	github.com/go-openapi/spec v0.20.12
+	github.com/go-openapi/strfmt v0.21.10
+	github.com/go-openapi/validate v0.22.4
 	github.com/go-yaml/yaml v2.1.0+incompatible
 	github.com/golang/gddo v0.0.0-20181116215533-9bd4a3295021
 	github.com/golang/protobuf v1.3.2 // indirect
-	github.com/google/go-cmp v0.2.0 // indirect
 	github.com/gorilla/handlers v1.5.2
 	github.com/gorilla/mux v1.8.1
 	github.com/justinas/alice v1.2.0
-	github.com/kr/pretty v0.1.0 // indirect
-	github.com/mailru/easyjson v0.0.0-20171120080333-32fa128f234d // indirect
-	github.com/mitchellh/mapstructure v0.0.0-20171017171808-06020f85339e // indirect
 	github.com/opentracing/opentracing-go v1.2.0
-	github.com/pborman/uuid v1.2.0 // indirect
 	github.com/prometheus/client_golang v0.9.4
 	github.com/rs/cors v1.10.1
 	github.com/rs/zerolog v1.31.0
 	github.com/stretchr/testify v1.8.4
 	github.com/zenazn/goji v1.0.1
 	golang.org/x/text v0.14.0
-	gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
-	gopkg.in/mgo.v2 v2.0.0-20160818020120-3f83fa500528 // indirect
 	gopkg.in/yaml.v2 v2.2.2 // indirect
 )