build: update the pinned version of Gazelle (#3555)

Fixes #3551.
diff --git a/setup.bzl b/setup.bzl
index 9120a68..ce4a1e3 100644
--- a/setup.bzl
+++ b/setup.bzl
@@ -22,8 +22,8 @@
     maybe(
         http_archive,
         name = "bazel_gazelle",
-        sha256 = "7949fc6cc17b5b191103e97481cf8889217263acf52e00b560683413af204fcb",
-        urls = ["https://github.com/bazelbuild/bazel-gazelle/releases/download/0.16.0/bazel-gazelle-0.16.0.tar.gz"],
+        sha256 = "3c681998538231a2d24d0c07ed5a7658cb72bfb5fd4bf9911157c0e9ac6a2687",
+        urls = ["https://github.com/bazelbuild/bazel-gazelle/releases/download/0.17.0/bazel-gazelle-0.17.0.tar.gz"],
     )
 
     maybe(