update generativelanguage version

Change-Id: Iff0d88eef997ba3ea3ede835b148831aee1213fc

Author: MarkDaoust

setup.py

@@ -42,7 +42,7 @@ def get_version():
     release_status = "Development Status :: 5 - Production/Stable"
 
 dependencies = [
-    "google-ai-generativelanguage==0.6.6",
+    "google-ai-generativelanguage==0.6.9",
     "google-api-core",
     "google-api-python-client",
     "google-auth>=2.15.0",  # 2.15 adds API key auth support