chore(deps): upgrade gapic-generator-java to 2.8.0 and update gax-java to 2.18.1

Google APIs · copybara-github · commit 55283447ab72 · 2022-05-23T15:52:33.000-07:00
PiperOrigin-RevId: 450543911
diff --git a/WORKSPACE b/WORKSPACE
@@ -211,7 +211,7 @@ maven_install(
     ],
 )
 
-_gax_java_version = "2.16.0"
+_gax_java_version = "2.18.1"
 
 http_archive(
     name = "com_google_api_gax_java",
@@ -236,7 +236,7 @@ grpc_java_repositories()
 
 # Java microgenerator.
 # Must go AFTER java-gax, since both java gax and gapic-generator are written in java and may conflict.
-_gapic_generator_java_version = "2.7.0"
+_gapic_generator_java_version = "2.8.0"
 
 http_archive(
     name = "gapic_generator_java",
