build(deps): bump the all-backend-deps group in /src with 6 updates

Bumps the all-backend-deps group in /src with 6 updates:

| Package | From | To |
| --- | --- | --- |
| [azure-identity](https://github.com/Azure/azure-sdk-for-python) | `1.21.0` | `1.22.0` |
| [openai](https://github.com/openai/openai-python) | `1.74.0` | `1.78.1` |
| [uvicorn](https://github.com/encode/uvicorn) | `0.34.1` | `0.34.2` |
| [aiohttp](https://github.com/aio-libs/aiohttp) | `3.11.16` | `3.11.18` |
| [pydantic-settings](https://github.com/pydantic/pydantic-settings) | `2.8.1` | `2.9.1` |
| [langchain](https://github.com/langchain-ai/langchain) | `0.3.23` | `0.3.25` |

Updates `azure-identity` from 1.21.0 to 1.22.0
- [Release notes](https://github.com/Azure/azure-sdk-for-python/releases)
- [Changelog](https://github.com/Azure/azure-sdk-for-python/blob/main/doc/esrp_release.md)
- [Commits](Azure/azure-sdk-for-python@azure-identity_1.21.0...azure-identity_1.22.0)

Updates `openai` from 1.74.0 to 1.78.1
- [Release notes](https://github.com/openai/openai-python/releases)
- [Changelog](https://github.com/openai/openai-python/blob/main/CHANGELOG.md)
- [Commits](openai/openai-python@v1.74.0...v1.78.1)

Updates `uvicorn` from 0.34.1 to 0.34.2
- [Release notes](https://github.com/encode/uvicorn/releases)
- [Changelog](https://github.com/encode/uvicorn/blob/master/docs/release-notes.md)
- [Commits](Kludex/uvicorn@0.34.1...0.34.2)

Updates `aiohttp` from 3.11.16 to 3.11.18
- [Release notes](https://github.com/aio-libs/aiohttp/releases)
- [Changelog](https://github.com/aio-libs/aiohttp/blob/master/CHANGES.rst)
- [Commits](aio-libs/aiohttp@v3.11.16...v3.11.18)

Updates `pydantic-settings` from 2.8.1 to 2.9.1
- [Release notes](https://github.com/pydantic/pydantic-settings/releases)
- [Commits](pydantic/pydantic-settings@v2.8.1...v2.9.1)

Updates `langchain` from 0.3.23 to 0.3.25
- [Release notes](https://github.com/langchain-ai/langchain/releases)
- [Commits](langchain-ai/langchain@langchain==0.3.23...langchain==0.3.25)

---
updated-dependencies:
- dependency-name: azure-identity
  dependency-version: 1.22.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: all-backend-deps
- dependency-name: openai
  dependency-version: 1.78.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: all-backend-deps
- dependency-name: uvicorn
  dependency-version: 0.34.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: all-backend-deps
- dependency-name: aiohttp
  dependency-version: 3.11.18
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: all-backend-deps
- dependency-name: pydantic-settings
  dependency-version: 2.9.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: all-backend-deps
- dependency-name: langchain
  dependency-version: 0.3.25
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: all-backend-deps
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

src/requirements-dev.txt

@@ -4,7 +4,7 @@ Markdown==3.8
 requests==2.32.3
 tqdm==4.67.1
 tiktoken
-langchain==0.3.23
+langchain==0.3.25
 bs4==0.0.2
 urllib3==2.4.0
 pytest==8.3.5

src/requirements.txt

@@ -8,10 +8,10 @@ azure-cosmos==4.9.0
 azure-ai-projects==1.0.0b11
 azure-ai-inference==1.0.0b9
 quart==0.20.0
-uvicorn==0.34.1
-aiohttp==3.11.16
+uvicorn==0.34.2
+aiohttp==3.11.18
 gunicorn==23.0.0
-pydantic-settings==2.8.1
+pydantic-settings==2.9.1
 flake8==7.2.0
 black==25.1.0
 autoflake==2.3.1