chore: Update gapic-generator-python to v1.18.4

Google APIs · copybara-github · commit 33fe71e5a206 · 2024-07-29T08:23:08.000-07:00
PiperOrigin-RevId: 657207628
diff --git a/WORKSPACE b/WORKSPACE
@@ -316,8 +316,8 @@ load("@rules_gapic//python:py_gapic_repositories.bzl", "py_gapic_repositories")
 
 py_gapic_repositories()
 
-_gapic_generator_python_version = "1.18.2"
-_gapic_generator_python_sha256 = "8cd7f08877e964c5ff5a39e9bfeffc6bdf46d65096570b5e161ef86257ade518"
+_gapic_generator_python_version = "1.18.4"
+_gapic_generator_python_sha256 = "8495ccb31d4f8b3a11cbfb5bbf8ab66d6867b282c5d8af47e190b05112162cfd"
 
 http_archive(
     name = "gapic_generator_python",
