docs: add robcaldecott as a contributor for bug, code (#890)

* docs: update CONTRIBUTORS.md

* docs: update .all-contributorsrc

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

.all-contributorsrc

@@ -1170,6 +1170,16 @@
       "contributions": [
         "bug"
       ]
+    },
+    {
+      "login": "robcaldecott",
+      "name": "Rob Caldecott",
+      "avatar_url": "https://avatars.githubusercontent.com/u/796702?v=4",
+      "profile": "https://github.com/robcaldecott",
+      "contributions": [
+        "bug",
+        "code"
+      ]
     }
   ],
   "commitConvention": "none",

CONTRIBUTORS.md

@@ -161,6 +161,7 @@ Thanks goes to these wonderful people ([emoji key][emojis]):
   </tr>
   <tr>
     <td align="center"><a href="https://github.com/joshunger"><img src="https://avatars.githubusercontent.com/u/2301847?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Josh Unger</b></sub></a><br /><a href="https://github.com/testing-library/user-event/issues?q=author%3Ajoshunger" title="Bug reports">🐛</a></td>
+    <td align="center"><a href="https://github.com/robcaldecott"><img src="https://avatars.githubusercontent.com/u/796702?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Rob Caldecott</b></sub></a><br /><a href="https://github.com/testing-library/user-event/issues?q=author%3Arobcaldecott" title="Bug reports">🐛</a> <a href="https://github.com/testing-library/user-event/commits?author=robcaldecott" title="Code">💻</a></td>
   </tr>
 </table>