docs: update .all-contributorsrc [skip ci]

Author: allcontributors[bot]

.all-contributorsrc

@@ -6692,6 +6692,15 @@
         "code",
         "test"
       ]
+    },
+    {
+      "login": "webermayank",
+      "name": "Mayank Verma",
+      "avatar_url": "https://avatars.githubusercontent.com/u/111176033?v=4",
+      "profile": "https://github.com/webermayank",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "repoType": "github",