Update dependency bazel_gazelle to v0.20.0

WORKSPACE

@@ -44,10 +44,10 @@ http_archive(
 
 http_archive(
     name = "bazel_gazelle",
-    sha256 = "86c6d481b3f7aedc1d60c1c211c6f76da282ae197c3b3160f54bd3a8f847896f",
+    sha256 = "d8c45ee70ec39a57e7a05e5027c32b1576cc7f16d9dd37135b0eddde45cf1b10",
     urls = [
-        "https://storage.googleapis.com/bazel-mirror/github.com/bazelbuild/bazel-gazelle/releases/download/v0.19.1/bazel-gazelle-v0.19.1.tar.gz",
-        "https://github.com/bazelbuild/bazel-gazelle/releases/download/v0.19.1/bazel-gazelle-v0.19.1.tar.gz",
+        "https://storage.googleapis.com/bazel-mirror/github.com/bazelbuild/bazel-gazelle/releases/download/v0.20.0/bazel-gazelle-v0.20.0.tar.gz",
+        "https://github.com/bazelbuild/bazel-gazelle/releases/download/v0.20.0/bazel-gazelle-v0.20.0.tar.gz",
     ],
 )
 

protoc-gen-swagger/options/BUILD.bazel

@@ -33,7 +33,6 @@ proto_library(
 
 go_proto_library(
     name = "options_go_proto",
-    compilers = ["@io_bazel_rules_go//proto:go_grpc"],
     importpath = "github.com/grpc-ecosystem/grpc-gateway/protoc-gen-swagger/options",
     proto = ":options_proto",
 )

repositories.bzl

@@ -53,8 +53,8 @@ def go_repositories():
     go_repository(
         name = "com_google_cloud_go",
         importpath = "cloud.google.com/go",
-        sum = "h1:e0WKqKTd5BnrG8aKH3J3h+QvEIQtSUcf2n5UZ5ZgLtQ=",
-        version = "v0.26.0",
+        sum = "h1:eOI3/cP2VTU6uZLDYAoic+eyzzB9YyGmJ7eIjl8rOPg=",
+        version = "v0.34.0",
     )
     go_repository(
         name = "in_gopkg_check_v1",
@@ -102,8 +102,8 @@ def go_repositories():
     go_repository(
         name = "org_golang_x_oauth2",
         importpath = "golang.org/x/oauth2",
-        sum = "h1:vEDujvNQGv4jgYKudGeI/+DAX4Jffq6hpD55MmoEvKs=",
-        version = "v0.0.0-20180821212333-d2e6202438be",
+        sum = "h1:TzXSXBo42m9gQenoE3b9BGiEpg5IG2JkU5FkPIawgtw=",
+        version = "v0.0.0-20200107190931-bf48bf16ab8d",
     )
     go_repository(
         name = "org_golang_x_sync",