docs: add Yama-Tomo as a contributor (#513)

* docs: update README.md

* docs: update .all-contributorsrc

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

Author: allcontributors[bot]

.all-contributorsrc

@@ -850,6 +850,16 @@
         "code",
         "test"
       ]
+    },
+    {
+      "login": "Yama-Tomo",
+      "name": "Yama-Tomo",
+      "avatar_url": "https://avatars0.githubusercontent.com/u/4970917?v=4",
+      "profile": "https://github.com/Yama-Tomo",
+      "contributions": [
+        "code",
+        "test"
+      ]
     }
   ],
   "repoHost": "https://github.com"

README.md

@@ -242,6 +242,7 @@ Thanks goes to these people ([emoji key][emojis]):
   <tr>
     <td align="center"><a href="http://pustovalov.dev"><img src="https://avatars2.githubusercontent.com/u/1568885?v=4" width="100px;" alt=""/><br /><sub><b>Pavel Pustovalov</b></sub></a><br /><a href="https://github.com/testing-library/dom-testing-library/commits?author=pustovalov" title="Documentation">📖</a></td>
     <td align="center"><a href="https://github.com/apalaniuk"><img src="https://avatars1.githubusercontent.com/u/17710124?v=4" width="100px;" alt=""/><br /><sub><b>Adam Palaniuk</b></sub></a><br /><a href="https://github.com/testing-library/dom-testing-library/commits?author=apalaniuk" title="Code">💻</a> <a href="https://github.com/testing-library/dom-testing-library/commits?author=apalaniuk" title="Tests">⚠️</a></td>
+    <td align="center"><a href="https://github.com/Yama-Tomo"><img src="https://avatars0.githubusercontent.com/u/4970917?v=4" width="100px;" alt=""/><br /><sub><b>Yama-Tomo</b></sub></a><br /><a href="https://github.com/testing-library/dom-testing-library/commits?author=Yama-Tomo" title="Code">💻</a> <a href="https://github.com/testing-library/dom-testing-library/commits?author=Yama-Tomo" title="Tests">⚠️</a></td>
   </tr>
 </table>