doc: updated contributors file

Signed-off-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: bot-go-openapi[bot]

CONTRIBUTORS.md

@@ -4,12 +4,12 @@
 
 | Total Contributors | Total Contributions |
 | --- | --- |
-| 12  | 105  |
+| 13  | 110  |
 
 | Username | All Time Contribution Count | All Commits |
 | --- | --- | --- |
 | @casualjim | 58 | https://github.com/go-openapi/errors/commits?author=casualjim |
-| @fredbi | 32 | https://github.com/go-openapi/errors/commits?author=fredbi |
+| @fredbi | 36 | https://github.com/go-openapi/errors/commits?author=fredbi |
 | @youyuanwu | 5 | https://github.com/go-openapi/errors/commits?author=youyuanwu |
 | @alexandear | 2 | https://github.com/go-openapi/errors/commits?author=alexandear |
 | @fiorix | 1 | https://github.com/go-openapi/errors/commits?author=fiorix |
@@ -19,6 +19,7 @@
 | @guillemj | 1 | https://github.com/go-openapi/errors/commits?author=guillemj |
 | @maxatome | 1 | https://github.com/go-openapi/errors/commits?author=maxatome |
 | @Simon-Li | 1 | https://github.com/go-openapi/errors/commits?author=Simon-Li |
+| @aokumasan | 1 | https://github.com/go-openapi/errors/commits?author=aokumasan |
 | @ujjwalsh | 1 | https://github.com/go-openapi/errors/commits?author=ujjwalsh |
 
  _this file was generated by the [Contributors GitHub Action](https://github.com/github/contributors)_