Refresh vendored HTML converter

[chubes4]

Summary

• Refresh the vendor-prefixed chubes4/html-to-blocks-converter copy to current main (0108e24).
• Pulls in the recent span/card/diagram conversion fixes needed by downstream Static Site Importer validation.

Verification

• composer update chubes4/html-to-blocks-converter --with-dependencies
• composer build
• homeboy lint --path /Users/chubes/Developer/block-format-bridge@refresh-h2bc-current --extension wordpress --changed-since origin/main
• homeboy test --path /Users/chubes/Developer/block-format-bridge@refresh-h2bc-current --extension wordpress --changed-since origin/main

AI assistance

• AI assistance: Yes
• Tool(s): OpenCode (GPT-5.5)
• Used for: Diagnosed the downstream stale vendored dependency, ran the dependency refresh/build, and verified the scoped Homeboy checks.