fix(gazelle): Use the correct rules_go label in gazelle/manifest/defs.bzl (#2058)

Fixes #2057.

Commit a1d2e45 (#1993) added a reference to
`@com_github_bazelbuild_rules_go`, but the module is already added as
`@io_bazel_rules_go`.

gazelle/manifest/defs.bzl

diff --git a/gazelle/manifest/defs.bzl b/gazelle/manifest/defs.bzl
index 542f6dc..5211b71 100644
--- a/gazelle/manifest/defs.bzl
+++ b/gazelle/manifest/defs.bzl
@@ -132,7 +132,7 @@
             rundir = ".",
             deps = [
                 Label("//manifest"),
-                Label("@com_github_bazelbuild_rules_go//go/runfiles"),
+                Label("@io_bazel_rules_go//go/runfiles"),
             ],
             # kwargs could contain test-specific attributes like size or timeout
             **dict(attrs, **kwargs)