Use HTTPS repository URL in package metadata

[chenlinxi890-spec]

safe-buffer PR draft

Upstream issue: #43

Microbounty lead: charles-openclaw/charles-microbounties#3413

Suggested branch:

codex/update-repository-url

Commit message:

Use HTTPS repository URL

PR title:

Use HTTPS repository URL in package metadata

PR body:

Updates the `repository.url` package metadata from the deprecated `git://` protocol to `git+https://`.

This keeps the npm metadata compatible with environments that block or no longer support unauthenticated `git://` transport.

Validation:
- Parsed `package.json` locally with Python's JSON parser.
- Confirmed `repository.url` is now `git+https://github.com/feross/safe-buffer.git`.

Closes #43

Notes:

• This is a metadata-only change.
• No production system testing is involved.
• No secrets, credentials, private data, scanning, or destructive actions are required.
• Actual PR submission is still blocked by unavailable GitHub write tooling in this environment.