docs: update .all-contributorsrc [skip ci]

allcontributors[bot] · web-flow · commit e1540841010f · 2021-09-20T16:29:19.000Z
diff --git a/.all-contributorsrc b/.all-contributorsrc
@@ -408,6 +408,16 @@
       "contributions": [
         "doc"
       ]
+    },
+    {
+      "login": "wigging",
+      "name": "Gavin Wiggins",
+      "avatar_url": "https://avatars.githubusercontent.com/u/6828967?v=4",
+      "profile": "https://gavinw.me",
+      "contributions": [
+        "bug",
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7,
