fix: error handling and vendor

vendor/github.com/go-openapi/validate/README.md

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+# Validation helpers [![Build Status](https://github.com/go-openapi/validate/actions/workflows/go-test.yml/badge.svg)](https://github.com/go-openapi/validate/actions?query=workflow%3A"go+test") [![codecov](https://codecov.io/gh/go-openapi/validate/branch/master/graph/badge.svg)](https://codecov.io/gh/go-openapi/validate)
+
+[![Slack Status](https://slackin.goswagger.io/badge.svg)](https://slackin.goswagger.io)
+[![license](http://img.shields.io/badge/license-Apache%20v2-orange.svg)](https://raw.githubusercontent.com/go-openapi/validate/master/LICENSE)
+[![Go Reference](https://pkg.go.dev/badge/github.com/go-openapi/validate.svg)](https://pkg.go.dev/github.com/go-openapi/validate)
+[![Go Report Card](https://goreportcard.com/badge/github.com/go-openapi/validate)](https://goreportcard.com/report/github.com/go-openapi/validate)
+
+This package provides helpers to validate Swagger 2.0. specification (aka OpenAPI 2.0). 
+
+Reference can be found here: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/2.0.md.
+
+## What's inside?
+
+* A validator for Swagger specifications
+* A validator for JSON schemas draft4
+* Helper functions to validate individual values (used by code generated by [go-swagger](https://github.com/go-swagger/go-swagger)).
+  * Required, RequiredNumber, RequiredString
+  * ReadOnly
+  * UniqueItems, MaxItems, MinItems
+  * Enum, EnumCase
+  * Pattern, MinLength, MaxLength
+  * Minimum, Maximum, MultipleOf
+  * FormatOf
+
+[Documentation](https://pkg.go.dev/github.com/go-openapi/validate)
+
+## FAQ
+
+* Does this library support OpenAPI 3?
+
+> No.
+> This package currently only supports OpenAPI 2.0 (aka Swagger 2.0).
+> There is no plan to make it evolve toward supporting OpenAPI 3.x.
+> This [discussion thread](https://github.com/go-openapi/spec/issues/21) relates the full story.
+>
+> An early attempt to support Swagger 3 may be found at: https://github.com/go-openapi/spec3