Bump fastapi in /{{cookiecutter.project_slug}}/backend (#118)

Bumps [fastapi](https://github.com/tiangolo/fastapi) from 0.61.0 to 0.61.1.
- [Release notes](https://github.com/tiangolo/fastapi/releases)
- [Commits](fastapi/fastapi@0.61.0...0.61.1)

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Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Author: dependabot-preview[bot]

{{cookiecutter.project_slug}}/backend/requirements.txt

@@ -1,6 +1,6 @@
 alembic==1.4.2
 Authlib==0.14.3
-fastapi==0.61.0
+fastapi==0.61.1
 celery==4.4.7
 redis==3.5.3
 httpx==0.14.2