Update dependency io_bazel_stardoc to v0.8.0

Author: renovate[bot]

WORKSPACE

@@ -13,10 +13,10 @@ load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
 http_archive(
     name = "io_bazel_stardoc",
-    sha256 = "62bd2e60216b7a6fec3ac79341aa201e0956477e7c8f6ccc286f279ad1d96432",
+    sha256 = "ca933f39f2a6e0ad392fa91fd662545afcbd36c05c62365538385d35a0323096",
     urls = [
-        "https://mirror.bazel.build/github.com/bazelbuild/stardoc/releases/download/0.6.2/stardoc-0.6.2.tar.gz",
-        "https://github.com/bazelbuild/stardoc/releases/download/0.6.2/stardoc-0.6.2.tar.gz",
+        "https://mirror.bazel.build/github.com/bazelbuild/stardoc/releases/download/0.8.0/stardoc-0.8.0.tar.gz",
+        "https://github.com/bazelbuild/stardoc/releases/download/0.8.0/stardoc-0.8.0.tar.gz",
     ],
 )