build(deps): bump fastapi from 0.115.12 to 0.121.1 (#282)

Bumps [fastapi](https://github.com/fastapi/fastapi) from 0.115.12 to 0.121.1.
- [Release notes](https://github.com/fastapi/fastapi/releases)
- [Commits](fastapi/fastapi@0.115.12...0.121.1)

---
updated-dependencies:
- dependency-name: fastapi
  dependency-version: 0.121.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

poetry.lock

@@ -8,7 +8,7 @@ packages = [{include = "regtech_api_commons", from = "src"}]
 
 [tool.poetry.dependencies]
 python = "^3.12"
-fastapi = { version = "^0.115.12", extras = ["anyio=^4.4.0"]}
+fastapi = { version = "^0.121.1", extras = ["anyio=^4.4.0"]}
 requests = "^2.32.5"
 python-keycloak = "^5.8.1"
 pydantic-settings = "^2.12.0"