chore(deps): update dependency io_bazel_stardoc to v0.6.1

Author: renovate[bot]

internal_deps.bzl

@@ -45,10 +45,10 @@ def rules_dart_internal_deps():
 
     http_archive(
         name = "io_bazel_stardoc",
-        sha256 = "dfbc364aaec143df5e6c52faf1f1166775a5b4408243f445f44b661cfdc3134f",
+        sha256 = "3082a199f39e1fd9ed608421516fdbe9e9af8eb34f52e46e9a8c4798c8e6bfad",
         urls = [
-            "https://mirror.bazel.build/github.com/bazelbuild/stardoc/releases/download/0.5.6/stardoc-0.5.6.tar.gz",
-            "https://github.com/bazelbuild/stardoc/releases/download/0.5.6/stardoc-0.5.6.tar.gz",
+            "https://mirror.bazel.build/github.com/bazelbuild/stardoc/releases/download/0.6.1/stardoc-0.6.1.tar.gz",
+            "https://github.com/bazelbuild/stardoc/releases/download/0.6.1/stardoc-0.6.1.tar.gz",
         ],
     )