chore(deps): update dependency grpcio to v1.69.0 (#2102)

Author: renovate-bot

samples/geography/requirements.txt

@@ -25,7 +25,7 @@ google-crc32c==1.6.0; python_version >= '3.9'
 google-resumable-media==2.7.2
 googleapis-common-protos==1.66.0
 grpcio===1.62.2; python_version == '3.7'
-grpcio==1.68.1; python_version >= '3.8'
+grpcio==1.69.0; python_version >= '3.8'
 idna==3.10
 munch==4.0.0
 mypy-extensions==1.0.0