docs: add boneskull as a contributor for maintenance (#122)

* 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

@@ -16,6 +16,15 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "boneskull",
+      "name": "Christopher Hiller",
+      "avatar_url": "https://avatars.githubusercontent.com/u/924465?v=4",
+      "profile": "https://github.com/boneskull",
+      "contributions": [
+        "maintenance"
+      ]
     }
   ]
 }

README.md

@@ -494,6 +494,7 @@ See [ARCHITECTURE.md](ARCHITECTURE.md) for a detailed breakdown of **gh-stack**'
   <tbody>
     <tr>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/mvanhorn"><img src="https://avatars.githubusercontent.com/u/455140?v=4?s=100" width="100px;" alt="Matt Van Horn"/><br /><sub><b>Matt Van Horn</b></sub></a><br /><a href="#code-mvanhorn" title="Code">💻</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/boneskull"><img src="https://avatars.githubusercontent.com/u/924465?v=4?s=100" width="100px;" alt="Christopher Hiller"/><br /><sub><b>Christopher Hiller</b></sub></a><br /><a href="#maintenance-boneskull" title="Maintenance">🚧</a></td>
     </tr>
   </tbody>
 </table>