Update fastapi requirement from <1.0,>=0.115 to >=0.139.0,<1.0

Updates the requirements on [fastapi](https://github.com/fastapi/fastapi) to permit the latest version.
- [Release notes](https://github.com/fastapi/fastapi/releases)
- [Commits](fastapi/fastapi@0.115.0...0.139.0)

---
updated-dependencies:
- dependency-name: fastapi
  dependency-version: 0.139.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

pyproject.toml

@@ -4,7 +4,7 @@ version = "1.0.0"
 description = "Русскоязычная Duolingo-подобная обучалка Python"
 requires-python = ">=3.11"
 dependencies = [
-    "fastapi>=0.115,<1.0",
+    "fastapi>=0.139.0,<1.0",
     "uvicorn[standard]>=0.30,<1.0",
 ]