[BUG] openapi-generator-maven-plugin version 5.0.0 does not work for OpenApi 3.0 yml-files

Created by: frochi42

Description

I have a perfect OpenApi 3.0.1 yml-file. openapi-generator-maven-plugin v4.3.1 generates perfect code. When changing the plugin version from 4.3.1 to 5.0.0 I get a syntax error. No other changes.

[INFO] [INFO] --- openapi-generator-maven-plugin:5.0.0:generate (api) @ core-automation --- [ERROR] failed to read resource listing com.fasterxml.jackson.core.JsonParseException: Unrecognized token 'openapi': was expecting (JSON String, Number, Array, Object or token 'null', 'true' or 'false') at [Source: (StringReader); line: 1, column: 8]

openapi-generator version

5.0.0

OpenAPI declaration file content or url

openapi: 3.0.1
info:
  title: my Title
  description: Documentation of my REST APIs.
  ...

Generation Details

mvn install

Steps to reproduce

mvn install

Related issues/PRs

N/A

Suggest a fix

???