ambassadors page: add Monica McGuigan

Author: SethTisue

_data/ambassadors.yml

@@ -101,4 +101,10 @@
   discord: iusildra
   twitter: LucasNouguier
   github: iusildra
-  linkedin: https://www.linkedin.com/in/lucas-nouguier/
+  linkedin: https://www.linkedin.com/in/lucas-nouguier/
+
+- name: Monica McGuigan
+  description: conference speaker, data engineering, functional programmer at JPMorgan
+  image: /ambassadors/monica.jpg
+  city: London, England
+  linkedin: https://www.linkedin.com/in/monica-mcguigan/