Refresh bundled converter for inline spacing

[chubes4]

Summary

• Refresh the bundled html-to-blocks-converter dependency to include Reset margins for inline preservation paragraphs html-to-blocks-converter#346.
• Rebuild the prefixed vendor copy so downstream importers get zero-margin inline preservation paragraphs.

Testing

• composer update chubes4/html-to-blocks-converter --with-dependencies
• composer build
• homeboy lint/test --extension wordpress could not run locally because the Homeboy registry no longer lists the wordpress extension in this shell; CI should exercise the normal Homeboy matrix.

AI assistance

• AI assistance: Yes
• Tool(s): OpenCode (GPT-5.5)
• Used for: Dependency refresh, prefixed vendor rebuild, and PR description drafting.