Update httpx requirement from ^0.26.0 to ^0.27.0 (#11)

Updates the requirements on [httpx](https://github.com/encode/httpx) to permit the latest version.
- [Release notes](https://github.com/encode/httpx/releases)
- [Changelog](https://github.com/encode/httpx/blob/master/CHANGELOG.md)
- [Commits](encode/httpx@0.26.0...0.27.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

pyproject.toml

@@ -41,7 +41,7 @@ loguru = "^0.7.2"
 # melody.kit
 qrcode = "^7.4.2"
 authlib = "^1.3.0"
-httpx = "^0.26.0"  # for `authlib`
+httpx = "^0.27.0"  # for `authlib`
 itsdangerous = "^2.1.2"  # for `starlette`
 fastapi = "^0.109.2"
 toml = "^0.10.2"