chore: Update gapic-generator-python to v1.11.4

Google APIs · copybara-github · commit c09c75e087d8 · 2023-07-13T13:11:46.000-07:00
PiperOrigin-RevId: 547897126
diff --git a/WORKSPACE b/WORKSPACE
@@ -323,7 +323,7 @@ load("@rules_python//python:pip.bzl", "pip_install")
 
 pip_install()
 
-_gapic_generator_python_version = "1.11.3"
+_gapic_generator_python_version = "1.11.4"
 
 http_archive(
     name = "gapic_generator_python",
