Upgrade all Go dependencies

This requires us to adjust bb_browser's main function to make use of
structured concurrency.

WORKSPACE

@@ -10,19 +10,19 @@ http_archive(
 
 http_archive(
     name = "io_bazel_rules_go",
-    sha256 = "56d8c5a5c91e1af73eca71a6fab2ced959b67c86d12ba37feedb0a2dfea441a6",
+    sha256 = "dd926a88a564a9246713a9c00b35315f54cbd46b31a26d5d8fb264c07045f05d",
     urls = [
-        "https://mirror.bazel.build/github.com/bazelbuild/rules_go/releases/download/v0.37.0/rules_go-v0.37.0.zip",
-        "https://github.com/bazelbuild/rules_go/releases/download/v0.37.0/rules_go-v0.37.0.zip",
+        "https://mirror.bazel.build/github.com/bazelbuild/rules_go/releases/download/v0.38.1/rules_go-v0.38.1.zip",
+        "https://github.com/bazelbuild/rules_go/releases/download/v0.38.1/rules_go-v0.38.1.zip",
     ],
 )
 
 http_archive(
     name = "bazel_gazelle",
-    sha256 = "efbbba6ac1a4fd342d5122cbdfdb82aeb2cf2862e35022c752eaddffada7c3f3",
+    sha256 = "ecba0f04f96b4960a5b250c8e8eeec42281035970aa8852dda73098274d14a1d",
     urls = [
-        "https://mirror.bazel.build/github.com/bazelbuild/bazel-gazelle/releases/download/v0.27.0/bazel-gazelle-v0.27.0.tar.gz",
-        "https://github.com/bazelbuild/bazel-gazelle/releases/download/v0.27.0/bazel-gazelle-v0.27.0.tar.gz",
+        "https://mirror.bazel.build/github.com/bazelbuild/bazel-gazelle/releases/download/v0.29.0/bazel-gazelle-v0.29.0.tar.gz",
+        "https://github.com/bazelbuild/bazel-gazelle/releases/download/v0.29.0/bazel-gazelle-v0.29.0.tar.gz",
     ],
 )
 
@@ -35,7 +35,7 @@ load("@io_bazel_rules_go//go:deps.bzl", "go_register_toolchains", "go_rules_depe
 
 go_rules_dependencies()
 
-go_register_toolchains(version = "1.19.4")
+go_register_toolchains(version = "1.20.1")
 
 load("@io_bazel_rules_docker//repositories:repositories.bzl", container_repositories = "repositories")
 

cmd/bb_browser/BUILD.bazel

@@ -44,6 +44,7 @@ go_library(
         "@com_github_buildbarn_bb_storage//pkg/filesystem/path",
         "@com_github_buildbarn_bb_storage//pkg/global",
         "@com_github_buildbarn_bb_storage//pkg/http",
+        "@com_github_buildbarn_bb_storage//pkg/program",
         "@com_github_buildbarn_bb_storage//pkg/proto/auth",
         "@com_github_buildbarn_bb_storage//pkg/proto/fsac",
         "@com_github_buildbarn_bb_storage//pkg/proto/iscc",