fix: Prevent adk deploy from uploading .adk/session.db file

- This file can get quite large when testing locally in the ADK Web UI, and it can cause deployments to fail.

PiperOrigin-RevId: 952144358

Author: holtskinner

src/google/adk/cli/cli_deploy.py

@@ -616,7 +616,7 @@ def _get_ignore_patterns_func(
     agent_folder: str,
 ) -> Callable[[Any, list[str]], set[str]]:
   """Returns a shutil.ignore_patterns function with combined patterns from .gitignore, .gcloudignore and .ae_ignore."""
-  patterns = set()
+  patterns = set('.adk/')
 
   for filename in ['.gitignore', '.gcloudignore', '.ae_ignore']:
     filepath = os.path.join(agent_folder, filename)