docs: update .all-contributorsrc [skip ci]

allcontributors[bot] · adamghill · commit c4fccccf2b69 · 2021-12-22T20:07:05.000-05:00
diff --git a/.all-contributorsrc b/.all-contributorsrc
@@ -125,6 +125,16 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "robwa",
+      "name": "robwa",
+      "avatar_url": "https://avatars.githubusercontent.com/u/4658937?v=4",
+      "profile": "https://github.com/robwa",
+      "contributions": [
+        "code",
+        "test"
+      ]
     }
   ],
   "contributorsPerLine": 7,
