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

@@ -0,0 +1,24 @@
+# Contributors
+
+- Repository: ['go-openapi/errors']
+
+| Total Contributors | Total Contributions |
+| --- | --- |
+| 12  | 105  |
+
+| 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 |
+| @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 |
+| @ligustah | 1 | https://github.com/go-openapi/errors/commits?author=ligustah |
+| @artemseleznev | 1 | https://github.com/go-openapi/errors/commits?author=artemseleznev |
+| @gautierdelorme | 1 | https://github.com/go-openapi/errors/commits?author=gautierdelorme |
+| @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 |
+| @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)_