call gazelle_dependencies

According to bazel-contrib/bazel-gazelle#1654
we need to call the gazelle_dependencies macro in WORKSPACE. We already
do that in gazelle/WORKSPACE but it's not in the root WORKSPACE. Maybe
we have to do it there, too...

Author: dougthor42

gazelle/deps.bzl

@@ -16,6 +16,7 @@
 
 load("@bazel_gazelle//:deps.bzl", _go_repository = "go_repository")
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+load("@bazel_gazelle//:deps.bzl", "gazelle_dependencies")
 
 def go_repository(name, **kwargs):
     if name not in native.existing_rules():
@@ -33,6 +34,7 @@ def python_stdlib_list_deps():
 
 def gazelle_deps():
     go_deps()
+    gazelle_dependencies()
     python_stdlib_list_deps()
 
 def go_deps():