chore(deps): update dependency io_bazel_stardoc to v0.7.0 (#257)

Author: renovate[bot]

docs/WORKSPACE.bazel

@@ -13,10 +13,10 @@ load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
 http_archive(
     name = "io_bazel_stardoc",
-    sha256 = "62bd2e60216b7a6fec3ac79341aa201e0956477e7c8f6ccc286f279ad1d96432",
+    sha256 = "dd7f32f4fe2537ce2452c51f816a5962d48888a5b07de2c195f3b3da86c545d3",
     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/0.7.0/stardoc-0.7.0.tar.gz",
+        "https://github.com/bazelbuild/stardoc/releases/download/0.7.0/stardoc-0.7.0.tar.gz",
     ],
 )