add huizache workshop

wiki/src/blueprint/monthly_report/report_2019_06.mdwn

@@ -87,6 +87,7 @@ Past events
 - Estrella Soria gave a workshop about Tails from a cyberfeminist
   perspective on [June 18 in the Virgen de los Deseos](https://twitter.com/tecnochamana/status/1141018007281573889)
   social center in La Paz, Bolivia.
+- Another Tails workshop was held in Guadalajara, México on June 29, as part of the ['Cuidarnos en red(es)' day of Digital self-defense at Huizache](https://mastodon.social/@noticiasdeabajo/102279012433478653).
 
 Upcoming events
 ---------------