[AETHER-966] Upgrade errorprone to 2.3.4

Change-Id: Ibc0e804333b234e9ade3ddb610dbbc30aee3ecd7
diff --git a/deps/deps.json b/deps/deps.json
index d72b890..eaf4bb3 100644
--- a/deps/deps.json
+++ b/deps/deps.json
@@ -291,7 +291,7 @@
 
     // grpc related jars
     "com_google_api_grpc_proto_google_common_protos": "mvn:com.google.api.grpc:proto-google-common-protos:1.12.0",
-    "com_google_errorprone_error_prone_annotations": "mvn:com.google.errorprone:error_prone_annotations:2.3.3",
+    "com_google_errorprone_error_prone_annotations": "mvn:com.google.errorprone:error_prone_annotations:2.3.4",
     "com_google_auth_google_auth_library_credentials": "mvn:com.google.auth:google-auth-library-credentials:0.13.0",
     "com_google_auth_google_auth_library_oauth2_http": "mvn:com.google.auth:google-auth-library-oauth2-http:0.13.0",
     "com_google_j2objc_j2objc_annotations": "mvn:com.google.j2objc:j2objc-annotations:1.1",