chore(deps): bump fastapi from 0.115.6 to 0.138.1 in /backend

[dependabot]

Bumps fastapi from 0.115.6 to 0.138.1.

Release notes

Sourced from fastapi's releases.

0.138.1

Refactors

• ♻️ Refactor Library Skills, make info easier to find for agents. PR #15841 by @​tiangolo.

Internal

• 👷 Simplify pull request workflow triggers. PR #15836 by @​tiangolo.
• 👷 Update issue-manager to 0.7.1. PR #15833 by @​tiangolo.
• ⬆️ Update issue-manager to 0.7.0. PR #15831 by @​tiangolo.
• 🔧 Update sponsors: Add TestMu again. PR #15830 by @​tiangolo.
• 🔒️ Update zizmor workflow security checks. PR #15820 by @​tiangolo.
• ⬆ Bump pydantic-settings from 2.14.1 to 2.14.2. PR #15799 by @​dependabot[bot].

0.138.0

Features

• ✨ Add support for app.frontend("/", directory="dist") and router.frontend("/", directory="dist"). PR #15800 by @​tiangolo.
  • Read the docs: Frontend.

Docs

• 📝 Fix typo in release notes. PR #15807 by @​tiangolo.
• 📝 Add app.frontend() instructions to Agent Library Skill. PR #15805 by @​tiangolo.
• 📝 Update release notes link. PR #15802 by @​tiangolo.
• ✏️ Update white space characters in bigger apps. PR #15801 by @​tiangolo.
• ✏️ Fix grammar, typos, and broken links in docs. PR #15694 by @​YuriiMotov.

Translations

• 🌐 Enable Hindi docs translations. PR #15554 by @​YuriiMotov.

Internal

• 🐛 Fix failing test, update format for raised errors. PR #15804 by @​tiangolo.
• 👷 Fix test-alls-green. PR #15803 by @​tiangolo.
• 🔧 Enable checking release-notes.md for typos. PR #15796 by @​YuriiMotov.
• 📝 Tweak wording about deploying to FastAPI Cloud. PR #15793 by @​tiangolo.
• 🔨 Use gpt-5.5 model in translate.py, specify -chat to avoid warnings. PR #15792 by @​YuriiMotov.

0.137.2

Features

• ✨ Add iter_route_contexts() for advanced use cases that used to use router.routes (e.g. Jupyverse). PR #15785 by @​tiangolo.

Translations

• 🌐 Fix broken Markdown in Korean custom response docs. PR #15774 by @​kooqooo.
• 🌐 Update translations for fr (update-outdated). PR #15761 by @​tiangolo.
• 🌐 Update translations for zh-hant (update-outdated). PR #15760 by @​tiangolo.

... (truncated)

Commits

• b90c49a 🔖 Release version 0.138.1 (#15842)
• 1f2f3df 📝 Update release notes
• 0af003a ♻️ Refactor Library Skills, make info easier to find for agents (#15841)
• d5494c1 📝 Update release notes
• 82c527e 👷 Simplify pull request workflow triggers (#15836)
• 3f28dbe 📝 Update release notes
• f6ea6b1 👷 Update issue-manager to 0.7.1 (#15833)
• 219ac63 📝 Update release notes
• fcc8e1f ⬆️ Update issue-manager to 0.7.0 (#15831)
• 457f4c7 📝 Update release notes
• Additional commits viewable in compare view