fix(deps): update dependency fastapi to v0.121.2 (#264)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [fastapi](https://redirect.github.com/fastapi/fastapi)
([changelog](https://fastapi.tiangolo.com/release-notes/)) | `==0.121.1`
-> `==0.121.2` |
[![age](https://developer.mend.io/api/mc/badges/age/pypi/fastapi/0.121.2?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/pypi/fastapi/0.121.2?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/pypi/fastapi/0.121.1/0.121.2?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/fastapi/0.121.1/0.121.2?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>fastapi/fastapi (fastapi)</summary>

###
[`v0.121.2`](https://redirect.github.com/fastapi/fastapi/releases/tag/0.121.2)

[Compare
Source](https://redirect.github.com/fastapi/fastapi/compare/0.121.1...0.121.2)

##### Fixes

- 🐛 Fix handling of JSON Schema attributes named "$ref". PR
[#&#8203;14349](https://redirect.github.com/fastapi/fastapi/pull/14349)
by [@&#8203;tiangolo](https://redirect.github.com/tiangolo).

##### Docs

- 📝 Add EuroPython talk & podcast episode with Sebastián Ramírez. PR
[#&#8203;14260](https://redirect.github.com/fastapi/fastapi/pull/14260)
by [@&#8203;clytaemnestra](https://redirect.github.com/clytaemnestra).
- ✏️ Fix links and add missing permalink in docs. PR
[#&#8203;14217](https://redirect.github.com/fastapi/fastapi/pull/14217)
by [@&#8203;YuriiMotov](https://redirect.github.com/YuriiMotov).

##### Translations

- 🌐 Update Portuguese translations with LLM prompt. PR
[#&#8203;14228](https://redirect.github.com/fastapi/fastapi/pull/14228)
by [@&#8203;ceb10n](https://redirect.github.com/ceb10n).
- 🔨 Add Portuguese translations LLM prompt. PR
[#&#8203;14208](https://redirect.github.com/fastapi/fastapi/pull/14208)
by [@&#8203;ceb10n](https://redirect.github.com/ceb10n).
- 🌐 Sync Russian docs. PR
[#&#8203;14331](https://redirect.github.com/fastapi/fastapi/pull/14331)
by [@&#8203;YuriiMotov](https://redirect.github.com/YuriiMotov).
- 🌐 Sync German docs. PR
[#&#8203;14317](https://redirect.github.com/fastapi/fastapi/pull/14317)
by [@&#8203;nilslindemann](https://redirect.github.com/nilslindemann).

</details>

---

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pyproject.toml

@@ -5,7 +5,7 @@ description = "BSS file server API"
 authors = [{ name = "Bence Csik", email = "[email protected]" }]
 requires-python = "==3.14.0"
 dependencies = [
-    "fastapi[standard-no-fastapi-cloud-cli]==0.121.1",
+    "fastapi[standard-no-fastapi-cloud-cli]==0.121.2",
     "pillow==12.0.0",
     # this should be part of standard-no-fastapi-cloud-cli, but is missing:
     # see: https://github.com/fastapi/fastapi/blob/6fae64ff49e8328048872714652a4dfa15406e41/pyproject.toml#L94-L98