Bump starlette from 0.22.0 to 0.25.0 (#27)

Bumps [starlette](https://github.com/encode/starlette) from 0.22.0 to 0.25.0.
- [Release notes](https://github.com/encode/starlette/releases)
- [Changelog](https://github.com/encode/starlette/blob/master/docs/release-notes.md)
- [Commits](encode/starlette@0.22.0...0.25.0)

---
updated-dependencies:
- dependency-name: starlette
  dependency-type: direct:production
...

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

requirements.txt

@@ -1,2 +1,2 @@
 Brotli==1.0.9
-starlette==0.22.0
+starlette==0.25.0