update v1 versions

Author: frantuma

README.md

@@ -46,7 +46,10 @@ Swagger core Version      | Release Date | OpenAPI Spec compatibility | Notes |
 2.0.5                     | 2018-09-19   | 3.0           | [tag v2.0.5](https://github.com/swagger-api/swagger-core/tree/v2.0.5)                                             | Supported
 2.0.4                     | 2018-09-05   | 3.0           | [tag v2.0.4](https://github.com/swagger-api/swagger-core/tree/v2.0.4)                                             | Supported
 2.0.3                     | 2018-08-09   | 3.0           | [tag v2.0.3](https://github.com/swagger-api/swagger-core/tree/v2.0.3)                                             | Supported
-1.6.4 (**current stable**)| 2021-12-23   | 2.0           | [tag v1.6.4](https://github.com/swagger-api/swagger-core/tree/v1.6.4)                                             | Supported
+1.6.7 (**current stable**)| 2022-09-27   | 2.0           | [tag v1.6.7](https://github.com/swagger-api/swagger-core/tree/v1.6.7)                                             | Supported
+1.6.6                     | 2022-04-04   | 2.0           | [tag v1.6.6](https://github.com/swagger-api/swagger-core/tree/v1.6.6)                                             | Supported
+1.6.5                     | 2022-02-07   | 2.0           | [tag v1.6.5](https://github.com/swagger-api/swagger-core/tree/v1.6.5)                                             | Supported
+1.6.4                     | 2021-12-23   | 2.0           | [tag v1.6.4](https://github.com/swagger-api/swagger-core/tree/v1.6.4)                                             | Supported
 1.6.3                     | 2021-09-29   | 2.0           | [tag v1.6.3](https://github.com/swagger-api/swagger-core/tree/v1.6.3)                                             | Supported
 1.6.2                     | 2020-07-01   | 2.0           | [tag v1.6.2](https://github.com/swagger-api/swagger-core/tree/v1.6.2)                                             | Supported
 1.6.1                     | 2020-04-01   | 2.0           | [tag v1.6.1](https://github.com/swagger-api/swagger-core/tree/v1.6.1)                                             | Supported