chore: remove update-repos and clean up WORKSPACE (#335)

- Remove `//:gazelle_update_repos` as it is not needed for Go when using
bzlmod.
- Remove `go_deps.bzl`. It is not used with bzlmod.
- Remove Starlark code from `WORKSPACE`.
- Add `WORKSPACE.bzlmod` to force strict mode.
- Disable Bazel lock files.
- Remove Bazel lock files.

MODULE.bazel

@@ -8,12 +8,12 @@ module(
 
 bazel_dep(
     name = "rules_go",
-    version = "0.40.1",
+    version = "0.41.0",
     repo_name = "io_bazel_rules_go",
 )
 bazel_dep(
     name = "gazelle",
-    version = "0.31.1",
+    version = "0.32.0",
     repo_name = "bazel_gazelle",
 )
 bazel_dep(name = "bazel_skylib", version = "1.4.2")