docs: add syshenyu as a contributor for code (#2345)

* docs: update README.md [skip ci]

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

---------

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

.all-contributorsrc

@@ -1278,6 +1278,15 @@
       "contributions": [
         "doc"
       ]
+    },
+    {
+      "login": "syshenyu",
+      "name": "DICE_Lab",
+      "avatar_url": "https://avatars.githubusercontent.com/u/92897003?v=4",
+      "profile": "https://github.com/syshenyu",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -436,6 +436,9 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/geeshta"><img src="https://avatars.githubusercontent.com/u/61031243?v=4?s=100" width="100px;" alt="geeshta"/><br /><sub><b>geeshta</b></sub></a><br /><a href="https://github.com/litestar-org/litestar/commits?author=geeshta" title="Documentation">📖</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://fosstodon.org/@robertrosca"><img src="https://avatars.githubusercontent.com/u/32569096?v=4?s=100" width="100px;" alt="Robert Rosca"/><br /><sub><b>Robert Rosca</b></sub></a><br /><a href="https://github.com/litestar-org/litestar/commits?author=RobertRosca" title="Documentation">📖</a></td>
     </tr>
+    <tr>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/syshenyu"><img src="https://avatars.githubusercontent.com/u/92897003?v=4?s=100" width="100px;" alt="DICE_Lab"/><br /><sub><b>DICE_Lab</b></sub></a><br /><a href="https://github.com/litestar-org/litestar/commits?author=syshenyu" title="Code">💻</a></td>
+    </tr>
   </tbody>
 </table>