docs: add LEI as a contributor (#450)

* 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

@@ -399,6 +399,16 @@
         "code",
         "test"
       ]
+    },
+    {
+      "login": "LEI",
+      "name": "Guillaume",
+      "avatar_url": "https://avatars2.githubusercontent.com/u/4112243?v=4",
+      "profile": "https://github.com/LEI",
+      "contributions": [
+        "code",
+        "test"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -1104,6 +1104,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
     <td align="center"><a href="https://github.com/ex1st"><img src="https://avatars1.githubusercontent.com/u/7733915?v=4" width="100px;" alt=""/><br /><sub><b>Ilya</b></sub></a><br /><a href="https://github.com/cdimascio/express-openapi-validator/commits?author=ex1st" title="Code">💻</a> <a href="https://github.com/cdimascio/express-openapi-validator/commits?author=ex1st" title="Tests">⚠️</a></td>
     <td align="center"><a href="http://aviskase.com"><img src="https://avatars1.githubusercontent.com/u/3819473?v=4" width="100px;" alt=""/><br /><sub><b>Yuliya Bagriy</b></sub></a><br /><a href="https://github.com/cdimascio/express-openapi-validator/commits?author=aviskase" title="Code">💻</a> <a href="https://github.com/cdimascio/express-openapi-validator/commits?author=aviskase" title="Tests">⚠️</a></td>
     <td align="center"><a href="http://ks.priv.no/"><img src="https://avatars2.githubusercontent.com/u/1738636?v=4" width="100px;" alt=""/><br /><sub><b>Kristjan Siimson</b></sub></a><br /><a href="https://github.com/cdimascio/express-openapi-validator/commits?author=siimsoni" title="Code">💻</a> <a href="https://github.com/cdimascio/express-openapi-validator/commits?author=siimsoni" title="Tests">⚠️</a></td>
+    <td align="center"><a href="https://github.com/LEI"><img src="https://avatars2.githubusercontent.com/u/4112243?v=4" width="100px;" alt=""/><br /><sub><b>Guillaume</b></sub></a><br /><a href="https://github.com/cdimascio/express-openapi-validator/commits?author=LEI" title="Code">💻</a> <a href="https://github.com/cdimascio/express-openapi-validator/commits?author=LEI" title="Tests">⚠️</a></td>
   </tr>
 </table>