Add new entry for 'Beyond the Basics' course (#1288)

Author: jamesWalczak

docs/gallery.yml

@@ -1,3 +1,7 @@
+- name: "Beyond the Basics: Mastering Advanced Python"
+  website: https://happyravenlabs.github.io/python-beyond-basics/intro.html
+  repository: https://github.com/HappyRavenLabs/python-beyond-basics
+  image: https://raw.githubusercontent.com/HappyRavenLabs/python-beyond-basics/refs/heads/main/figs/logo_noname.png
 - name: The image analysis field guide
   website: https://imaging.epfl.ch/field-guide/
   repository: https://github.com/EPFL-Center-for-Imaging/image-analysis-field-guide