chore: Update gapic-generator-python to v1.11.3

Google APIs · copybara-github · commit e6b16918b98f · 2023-07-10T09:44:29.000-07:00
PiperOrigin-RevId: 546899192
diff --git a/WORKSPACE b/WORKSPACE
@@ -323,7 +323,7 @@ load("@rules_python//python:pip.bzl", "pip_install")
 
 pip_install()
 
-_gapic_generator_python_version = "1.11.2"
+_gapic_generator_python_version = "1.11.3"
 
 http_archive(
     name = "gapic_generator_python",
