deps: update gax.version to v1.52.0

Author: renovate-bot

pom.xml

@@ -65,7 +65,7 @@
  <google.core.version>1.92.0</google.core.version>
  <google.api-common.version>1.8.1</google.api-common.version>
  <google.common-protos.version>1.17.0</google.common-protos.version>
- <gax.version>1.51.0</gax.version>
+ <gax.version>1.52.0</gax.version>
  <grpc.version>1.26.0</grpc.version>
  <protobuf.version>3.11.1</protobuf.version>
  <junit.version>4.12</junit.version>