docs: add MattyBalaam as a contributor for bug (#994)

* 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

@@ -1316,6 +1316,15 @@
       "contributions": [
         "bug"
       ]
+    },
+    {
+      "login": "MattyBalaam",
+      "name": "MattyBalaam",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1246923?v=4",
+      "profile": "https://github.com/MattyBalaam",
+      "contributions": [
+        "bug"
+      ]
     }
   ],
   "commitConvention": "none",

CONTRIBUTORS.md

@@ -181,6 +181,7 @@ Thanks goes to these wonderful people ([emoji key][emojis]):
     <td align="center"><a href="https://github.com/dzonatan"><img src="https://avatars.githubusercontent.com/u/5166666?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Rokas Brazdžionis</b></sub></a><br /><a href="https://github.com/testing-library/user-event/issues?q=author%3Adzonatan" title="Bug reports">🐛</a></td>
     <td align="center"><a href="https://github.com/dnt1996"><img src="https://avatars.githubusercontent.com/u/31310280?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jianxun Cheng</b></sub></a><br /><a href="https://github.com/testing-library/user-event/issues?q=author%3Adnt1996" title="Bug reports">🐛</a></td>
     <td align="center"><a href="https://github.com/jessharrell"><img src="https://avatars.githubusercontent.com/u/2468638?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jess Harrell</b></sub></a><br /><a href="https://github.com/testing-library/user-event/issues?q=author%3Ajessharrell" title="Bug reports">🐛</a></td>
+    <td align="center"><a href="https://github.com/MattyBalaam"><img src="https://avatars.githubusercontent.com/u/1246923?v=4?s=100" width="100px;" alt=""/><br /><sub><b>MattyBalaam</b></sub></a><br /><a href="https://github.com/testing-library/user-event/issues?q=author%3AMattyBalaam" title="Bug reports">🐛</a></td>
   </tr>
 </table>