Updating External Resources: Add tutorial in Portuguese and using PyGMT in Google Colab (#3360)

Co-authored-by: Yvonne Fröhlich <[email protected]>

Author: andrebelem

doc/external_resources.md

@@ -12,6 +12,16 @@ to submit a pull request with your recommended addition to the
 
 :::::{grid} 1 2 2 3
 
+::::{grid-item-card} 2024 PyGMT Webinar using Google Colab (in Portuguese)
+:link: https://github.com/andrebelem/Oficina_PyGMT
+:text-align: center
+:margin: 0 3 0 0
+
+![](https://github.com/andrebelem/Oficina_PyGMT/raw/main/Datasets/3D_sample.png)
++++
+Andre Belem
+::::
+
 ::::{grid-item-card} 2022 EGU SC5.2: Crafting beautiful maps with PyGMT
 :link: https://www.generic-mapping-tools.org/egu22pygmt/
 :text-align: center