Update dependency bazel_gazelle to v0.40.0

Author: renovate[bot]

WORKSPACE

@@ -26,10 +26,10 @@ http_archive(
 
 http_archive(
     name = "bazel_gazelle",
-    sha256 = "efbbba6ac1a4fd342d5122cbdfdb82aeb2cf2862e35022c752eaddffada7c3f3",
+    sha256 = "26be38709f5629d712a1846bdc4f05dd0130f40f02ccf758e90e6926e1305863",
     urls = [
-        "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/v0.27.0/bazel-gazelle-v0.27.0.tar.gz",
+        "https://github.com/bazelbuild/bazel-gazelle/releases/download/v0.40.0/bazel-gazelle-v0.40.0.tar.gz",
+        "https://mirror.bazel.build/github.com/bazelbuild/bazel-gazelle/releases/download/v0.40.0/bazel-gazelle-v0.40.0.tar.gz",
     ],
 )