chore: use gapic-generator-python 0.52.0

Google APIs · copybara-github · commit 410c184536a2 · 2021-09-29T14:11:37.000-07:00
fix: improper types in pagers generation
PiperOrigin-RevId: 399773015
diff --git a/WORKSPACE b/WORKSPACE
@@ -230,7 +230,7 @@ load("@rules_python//python:pip.bzl", "pip_repositories")
 
 pip_repositories()
 
-_gapic_generator_python_version = "0.51.2"
+_gapic_generator_python_version = "0.52.0"
 
 http_archive(
     name = "gapic_generator_python",
