build(deps): bump authlib in the pip group across 1 directory (#140)

Bumps the pip group with 1 update in the / directory: [authlib](https://github.com/authlib/authlib).


Updates `authlib` from 1.6.3 to 1.6.4
- [Release notes](https://github.com/authlib/authlib/releases)
- [Changelog](https://github.com/authlib/authlib/blob/main/docs/changelog.rst)
- [Commits](authlib/authlib@v1.6.3...v1.6.4)

---
updated-dependencies:
- dependency-name: authlib
  dependency-version: 1.6.4
  dependency-type: direct:production
  dependency-group: pip
...

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Author: dependabot[bot]

poetry.lock

@@ -17,7 +17,7 @@ pytest = "^8.4.2"
 httpx = "^0.28.1"
 pytest-asyncio = "^1.0.0"
 requests = "^2.32.5"
-authlib = "^1.6.3"
+authlib = "^1.6.4"
 jwt = "^1.3.1"
 pytest-cov = "^6.1.1"
 pydantic-settings = "^2.9.1"