Update dependency bazel_gazelle to v0.39.0

Author: renovate[bot]

WORKSPACE

@@ -26,10 +26,10 @@ http_archive(
 
 http_archive(
     name = "bazel_gazelle",
-    sha256 = "8ad77552825b078a10ad960bec6ef77d2ff8ec70faef2fd038db713f410f5d87",
+    sha256 = "2c7545cc914a411e5c15c3d55a0a5ed34fbff62def0e1f0ab6ed14bda222c3cc",
     urls = [
-        "https://github.com/bazelbuild/bazel-gazelle/releases/download/v0.38.0/bazel-gazelle-v0.38.0.tar.gz",
-        "https://mirror.bazel.build/github.com/bazelbuild/bazel-gazelle/releases/download/v0.38.0/bazel-gazelle-v0.38.0.tar.gz",
+        "https://github.com/bazelbuild/bazel-gazelle/releases/download/v0.39.0/bazel-gazelle-v0.39.0.tar.gz",
+        "https://mirror.bazel.build/github.com/bazelbuild/bazel-gazelle/releases/download/v0.39.0/bazel-gazelle-v0.39.0.tar.gz",
     ],
 )