docs: add camchenry as a contributor for code (#975)

* docs: update CONTRIBUTORS.md

* docs: update .all-contributorsrc

Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>

Author: allcontributors[bot]

.all-contributorsrc

@@ -1280,6 +1280,15 @@
       "contributions": [
         "bug"
       ]
+    },
+    {
+      "login": "camchenry",
+      "name": "Cameron McHenry",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1514176?v=4",
+      "profile": "http://camchenry.com",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "commitConvention": "none",

CONTRIBUTORS.md

@@ -175,6 +175,7 @@ Thanks goes to these wonderful people ([emoji key][emojis]):
     <td align="center"><a href="https://github.com/Thanga-Ganapathy"><img src="https://avatars.githubusercontent.com/u/22178434?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Thanga Ganapathy</b></sub></a><br /><a href="https://github.com/testing-library/user-event/issues?q=author%3AThanga-Ganapathy" title="Bug reports">🐛</a></td>
     <td align="center"><a href="https://github.com/mikaelrss"><img src="https://avatars.githubusercontent.com/u/26043795?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Mikael Solstad</b></sub></a><br /><a href="https://github.com/testing-library/user-event/issues?q=author%3Amikaelrss" title="Bug reports">🐛</a></td>
     <td align="center"><a href="http://mattcarlotta.dev"><img src="https://avatars.githubusercontent.com/u/22607722?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Matt Carlotta</b></sub></a><br /><a href="https://github.com/testing-library/user-event/issues?q=author%3Amattcarlotta" title="Bug reports">🐛</a></td>
+    <td align="center"><a href="http://camchenry.com"><img src="https://avatars.githubusercontent.com/u/1514176?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Cameron McHenry</b></sub></a><br /><a href="https://github.com/testing-library/user-event/commits?author=camchenry" title="Code">💻</a></td>
   </tr>
 </table>