docs: update README.md [skip ci]

README.md

@@ -1062,6 +1062,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
     <td align="center"><a href="http://www.christiaannieuwlaat.nl"><img src="https://avatars1.githubusercontent.com/u/3034281?v=4" width="100px;" alt=""/><br /><sub><b>Christiaan Nieuwlaat</b></sub></a><br /><a href="https://github.com/cdimascio/express-openapi-validator/commits?author=krizzje" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/ex1st"><img src="https://avatars1.githubusercontent.com/u/7733915?v=4" width="100px;" alt=""/><br /><sub><b>Ilya</b></sub></a><br /><a href="https://github.com/cdimascio/express-openapi-validator/commits?author=ex1st" title="Code">💻</a> <a href="https://github.com/cdimascio/express-openapi-validator/commits?author=ex1st" title="Tests">⚠️</a></td>
     <td align="center"><a href="http://aviskase.com"><img src="https://avatars1.githubusercontent.com/u/3819473?v=4" width="100px;" alt=""/><br /><sub><b>Yuliya Bagriy</b></sub></a><br /><a href="https://github.com/cdimascio/express-openapi-validator/commits?author=aviskase" title="Code">💻</a> <a href="https://github.com/cdimascio/express-openapi-validator/commits?author=aviskase" title="Tests">⚠️</a></td>
+    <td align="center"><a href="http://ks.priv.no/"><img src="https://avatars2.githubusercontent.com/u/1738636?v=4" width="100px;" alt=""/><br /><sub><b>Kristjan Siimson</b></sub></a><br /><a href="https://github.com/cdimascio/express-openapi-validator/commits?author=siimsoni" title="Code">💻</a> <a href="https://github.com/cdimascio/express-openapi-validator/commits?author=siimsoni" title="Tests">⚠️</a></td>
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