docs: add Avinash-1394 as a contributor for code (#577)

Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>
Co-authored-by: Serhii Dimchenko <39801237+svdimchenko@users.noreply.github.com>

Author: allcontributors[bot]

.all-contributorsrc

@@ -160,6 +160,15 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "Avinash-1394",
+      "name": "Avinash Santhanagopalan",
+      "avatar_url": "https://avatars.githubusercontent.com/u/43074786?v=4",
+      "profile": "https://github.com/Avinash-1394",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -844,6 +844,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
     <tr>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/Danya-Fpnk"><img src="https://avatars.githubusercontent.com/u/122433975?v=4?s=100" width="100px;" alt="DanyaF"/><br /><sub><b>DanyaF</b></sub></a><br /><a href="https://github.com/dbt-athena/dbt-athena/commits?author=Danya-Fpnk" title="Code">💻</a> <a href="https://github.com/dbt-athena/dbt-athena/issues?q=author%3ADanya-Fpnk" title="Bug reports">🐛</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/octiva"><img src="https://avatars.githubusercontent.com/u/53303191?v=4?s=100" width="100px;" alt="Spencer"/><br /><sub><b>Spencer</b></sub></a><br /><a href="https://github.com/dbt-athena/dbt-athena/commits?author=octiva" title="Code">💻</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/Avinash-1394"><img src="https://avatars.githubusercontent.com/u/43074786?v=4?s=100" width="100px;" alt="Avinash Santhanagopalan"/><br /><sub><b>Avinash Santhanagopalan</b></sub></a><br /><a href="https://github.com/dbt-athena/dbt-athena/commits?author=Avinash-1394" title="Code">💻</a></td>
     </tr>
   </tbody>
 </table>