docs: add MichaelDeBoey as a contributor (#599)

* docs: update README.md

* docs: update .all-contributorsrc

Author: Kent C. Dodds

.all-contributorsrc

@@ -912,7 +912,8 @@
       "avatar_url": "https://avatars3.githubusercontent.com/u/6643991?v=4",
       "profile": "https://michaeldeboey.be",
       "contributions": [
-        "review"
+        "review",
+        "code"
       ]
     },
     {

README.md

@@ -508,7 +508,7 @@ Thanks goes to these people ([emoji key][emojis]):
   <tr>
     <td align="center"><a href="https://afontcu.dev"><img src="https://avatars0.githubusercontent.com/u/9197791?v=4" width="100px;" alt=""/><br /><sub><b>Adrià Fontcuberta</b></sub></a><br /><a href="https://github.com/testing-library/react-testing-library/pulls?q=is%3Apr+reviewed-by%3Aafontcu" title="Reviewed Pull Requests">👀</a> <a href="https://github.com/testing-library/react-testing-library/commits?author=afontcu" title="Documentation">📖</a></td>
     <td align="center"><a href="https://blog.johnnyreilly.com/"><img src="https://avatars0.githubusercontent.com/u/1010525?v=4" width="100px;" alt=""/><br /><sub><b>John Reilly</b></sub></a><br /><a href="https://github.com/testing-library/react-testing-library/pulls?q=is%3Apr+reviewed-by%3Ajohnnyreilly" title="Reviewed Pull Requests">👀</a></td>
-    <td align="center"><a href="https://michaeldeboey.be"><img src="https://avatars3.githubusercontent.com/u/6643991?v=4" width="100px;" alt=""/><br /><sub><b>Michaël De Boey</b></sub></a><br /><a href="https://github.com/testing-library/react-testing-library/pulls?q=is%3Apr+reviewed-by%3AMichaelDeBoey" title="Reviewed Pull Requests">👀</a></td>
+    <td align="center"><a href="https://michaeldeboey.be"><img src="https://avatars3.githubusercontent.com/u/6643991?v=4" width="100px;" alt=""/><br /><sub><b>Michaël De Boey</b></sub></a><br /><a href="https://github.com/testing-library/react-testing-library/pulls?q=is%3Apr+reviewed-by%3AMichaelDeBoey" title="Reviewed Pull Requests">👀</a> <a href="https://github.com/testing-library/react-testing-library/commits?author=MichaelDeBoey" title="Code">💻</a></td>
     <td align="center"><a href="https://cimbul.com"><img src="https://avatars2.githubusercontent.com/u/927923?v=4" width="100px;" alt=""/><br /><sub><b>Tim Yates</b></sub></a><br /><a href="https://github.com/testing-library/react-testing-library/pulls?q=is%3Apr+reviewed-by%3Acimbul" title="Reviewed Pull Requests">👀</a></td>
     <td align="center"><a href="https://github.com/eventualbuddha"><img src="https://avatars3.githubusercontent.com/u/1938?v=4" width="100px;" alt=""/><br /><sub><b>Brian Donovan</b></sub></a><br /><a href="https://github.com/testing-library/react-testing-library/commits?author=eventualbuddha" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/JaysQubeXon"><img src="https://avatars1.githubusercontent.com/u/18309230?v=4" width="100px;" alt=""/><br /><sub><b>Noam Gabriel Jacobson</b></sub></a><br /><a href="https://github.com/testing-library/react-testing-library/commits?author=JaysQubeXon" title="Documentation">📖</a></td>