Update dependency bazel_gazelle to v0.40.0

Author: renovate[bot]

WORKSPACE

@@ -41,10 +41,10 @@ http_archive(
 
 http_archive(
     name = "bazel_gazelle",
-    sha256 = "b85f48fa105c4403326e9525ad2b2cc437babaa6e15a3fc0b1dbab0ab064bc7c",
+    sha256 = "26be38709f5629d712a1846bdc4f05dd0130f40f02ccf758e90e6926e1305863",
     urls = [
-        "https://mirror.bazel.build/github.com/bazelbuild/bazel-gazelle/releases/download/v0.22.2/bazel-gazelle-v0.22.2.tar.gz",
-        "https://github.com/bazelbuild/bazel-gazelle/releases/download/v0.22.2/bazel-gazelle-v0.22.2.tar.gz",
+        "https://mirror.bazel.build/github.com/bazelbuild/bazel-gazelle/releases/download/v0.40.0/bazel-gazelle-v0.40.0.tar.gz",
+        "https://github.com/bazelbuild/bazel-gazelle/releases/download/v0.40.0/bazel-gazelle-v0.40.0.tar.gz",
     ],
 )