ambassadors page: add Monica McGuigan (#1628)

Author: SethTisue

_data/ambassadors.yml

@@ -101,4 +101,11 @@
   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
+  discord: monmcguigan
+  linkedin: https://www.linkedin.com/in/monica-mcguigan/