please add Spanish podcasts to EBookFoundation Master List (#4974)

free-podcasts-screencasts-es.md

@@ -1,8 +1,16 @@
 ### Index
 
+* [Ciencia de Datos](#ciencia-de-datos)
 * [Frontend](#frontend)
 
 
+### Ciencia de Datos
+
+* [BigDateame](https://bigdateame.com) (podcast)
+* [DataLatam](http://www.datalatam.com) (podcast)
+* [SoyData](https://us.ivoox.com/es/podcast-soydata-ciencia-datos-a-tu_sq_f1414925_1.html) (podcast)
+
+
 ### Frontend
 
 * [WeCodeSign Podcast](http://wecodesignpodcast.com) (podcast)