Update contributors (#342)

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[create-pull-request](https://github.com/peter-evans/create-pull-request)
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Author: stevespringett

about/working-groups/working-groups.json

@@ -4880,5 +4880,19 @@
     "categories": [
       "contributors"
     ]
+  },
+  {
+    "displayName": "jeremylong",
+    "lastName": "jeremylong",
+    "headshot": "https://avatars.githubusercontent.com/u/862914?v=4",
+    "organization": null,
+    "description": null,
+    "twitter": null,
+    "linkedin": null,
+    "github": "jeremylong",
+    "homepage": "https://github.com/jeremylong",
+    "categories": [
+      "contributors"
+    ]
   }
 ]