chore(generator-cli): release 0.9.39 to retrigger failed publish

[tstanmay13]

Description

The generator-cli publish failed twice (run 27320288027, run 27323386501): the workflow's check-version step diffs versions.yml against its previous git revision, and the previous revision (the #16444 merge) contains leftover conflict markers that fail YAML parsing — so even after #16467 cleaned up the file, the publish run still failed and 0.9.38 never reached npm (npm latest is 0.9.37).

This adds a 0.9.39 entry so the next publish run compares the clean #16467 revision against this one, detects a new version, and publishes — shipping the @fern-api/replay 0.18.0 bump (fernignore-aware detection, trailing-slash patterns, EPIPE fix) as 0.9.39.

Changes Made

• packages/generator-cli/versions.yml: added 0.9.39 chore entry (re-release of 0.9.38)
• Updated README.md generator (not applicable)

Testing

• Manual testing completed: verified the failure mode by reading getLatestVersionsYml.ts (parses --previous-path) + the workflow's git log -n 2 -- versions.yml previous-revision logic
• Unit tests added/updated (n/a — release entry only)

Link to Devin session: https://app.devin.ai/sessions/ebae597e588c4fecb8f3802f05617c2a
Requested by: @tstanmay13

[devin-ai-integration]

🤖 Devin AI Engineer

I'll be helping with this pull request! Here's what you should know:

✅ I will automatically:

• Address comments on this PR. Add '(aside)' to your comment to have me ignore it.
• Look at CI failures and help fix them

Note: I can only respond to comments from users who have write access to this repository.

⚙️ Control Options:

• Disable automatic comment, CI, and merge conflict monitoring