allow for futher embedded snippets (#36004)

* allow for futher embedded snippets

* Update tools/azure-sdk-tools/ci_tools/snippet_update/python_snippet_updater.py

Author: l0lawrence

tools/azure-sdk-tools/ci_tools/snippet_update/python_snippet_updater.py

@@ -15,7 +15,7 @@
 snippets = {}
 not_up_to_date = False
 
-target_snippet_sources = ["samples/*.py", "samples/*/*.py"]
+target_snippet_sources = ["samples/*.py", "samples/**/*.py"]
 target_md_files = ["README.md"]