docs: add antischematic as a contributor for bug, and ideas (#344)

* docs: update README.md [skip ci]

* docs: update .all-contributorsrc [skip ci]

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

Author: allcontributors[bot]

.all-contributorsrc

@@ -331,6 +331,16 @@
       "contributions": [
         "maintenance"
       ]
+    },
+    {
+      "login": "antischematic",
+      "name": "antischematic",
+      "avatar_url": "https://avatars.githubusercontent.com/u/12976684?v=4",
+      "profile": "https://github.com/antischematic",
+      "contributions": [
+        "bug",
+        "ideas"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -227,6 +227,7 @@ Thanks goes to these people ([emoji key][emojis]):
       <td align="center"><a href="https://github.com/mateusduraes"><img src="https://avatars.githubusercontent.com/u/19319404?v=4?s=100" width="100px;" alt="Mateus Duraes"/><br /><sub><b>Mateus Duraes</b></sub></a><br /><a href="https://github.com/testing-library/angular-testing-library/commits?author=mateusduraes" title="Code">💻</a></td>
       <td align="center"><a href="https://github.com/JJosephttg"><img src="https://avatars.githubusercontent.com/u/23690250?v=4?s=100" width="100px;" alt="Josh Joseph"/><br /><sub><b>Josh Joseph</b></sub></a><br /><a href="https://github.com/testing-library/angular-testing-library/commits?author=JJosephttg" title="Code">💻</a> <a href="https://github.com/testing-library/angular-testing-library/commits?author=JJosephttg" title="Tests">⚠️</a></td>
       <td align="center"><a href="https://github.com/shaman-apprentice"><img src="https://avatars.githubusercontent.com/u/3596742?v=4?s=100" width="100px;" alt="Torsten Knauf"/><br /><sub><b>Torsten Knauf</b></sub></a><br /><a href="#maintenance-shaman-apprentice" title="Maintenance">🚧</a></td>
+      <td align="center"><a href="https://github.com/antischematic"><img src="https://avatars.githubusercontent.com/u/12976684?v=4?s=100" width="100px;" alt="antischematic"/><br /><sub><b>antischematic</b></sub></a><br /><a href="https://github.com/testing-library/angular-testing-library/issues?q=author%3Aantischematic" title="Bug reports">🐛</a> <a href="#ideas-antischematic" title="Ideas, Planning, & Feedback">🤔</a></td>
     </tr>
   </tbody>
 </table>