Recurse submodules to find project files

.gitignore

@@ -153,4 +153,7 @@ node_modules/
 mpyl_config.yml
 
 # Gradle template
-.gradle
+.gradle
+
+# Jupyter playground
+*.ipynb

src/mpyl/utilities/repo/__init__.py

@@ -293,7 +293,9 @@ def find_projects(self, folder_pattern: str = "") -> list[str]:
         overrides_pattern = f"{folder}/{Project.project_overrides_yaml_file_pattern()}"
 
         def files(pattern: str):
-            return set(self._repo.git.ls_files(pattern).splitlines())
+            return set(
+                self._repo.git.ls_files(pattern, recurse_submodules=True).splitlines()
+            )
 
         def deleted(pattern: str):
             return set(self._repo.git.ls_files("-d", pattern).splitlines())