Bump langchain from 1.3.8 to 1.3.9

[dependabot]

Bumps langchain from 1.3.8 to 1.3.9.

Release notes

Sourced from langchain's releases.

langchain==1.3.9

Changes since langchain==1.3.8

release(anthropic): 1.4.6 (#38105) release(langchain): 1.3.9 (#38104) fix(langchain,anthropic): confine file-search results and tighten anthropic allowed_prefixes (#38106)

Commits

• 3bfb6a3 release(langchain): 1.3.9 (#38104)
• dcaf779 fix(langchain,anthropic): confine file-search results and tighten anthropic `...
• 0392b6b fix(core): fix Pydantic v1 support in tools/runnable (#33698)
• See full diff in compare view

[github-actions]

uv.lock on main just moved via #68780 ("Bump zeep from 4.3.2 to 4.3.3"), commit e6c1ae6 and this PR currently conflicts.

Quickest fix:

git fetch upstream main && git rebase upstream/main
rm uv.lock && uv lock
git add uv.lock && git rebase --continue
git push --force-with-lease

Automated nudge — ignore if you're not ready to rebase. This comment is updated in place on future uv.lock bumps.

[potiuk]

@dependabot rebase

[dependabot]

The dependabot.yml entry that created this PR has been deleted so this PR can't be rebased. Please close the PR so Dependabot can create a new one with the current dependabot.yml.

[potiuk]

@dependabot recreate

[dependabot]

The dependabot.yml entry that created this PR has been deleted so this PR can't be recreated. Please close the PR so Dependabot can create a new one with the current dependabot.yml.

[dependabot]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version. You can also ignore all major, minor, or patch releases for a dependency by adding an ignore condition with the desired update_types to your config file.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.