Bump authlib from 1.3.0 to 1.3.1

Bumps [authlib](https://github.com/lepture/authlib) from 1.3.0 to 1.3.1.
- [Release notes](https://github.com/lepture/authlib/releases)
- [Changelog](https://github.com/lepture/authlib/blob/master/docs/changelog.rst)
- [Commits](lepture/authlib@v1.3.0...v1.3.1)

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

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

requirements.txt

@@ -1,4 +1,4 @@
-Authlib==1.3.0
+Authlib==1.3.1
 certifi
 click==8.1.7
 email_validator==2.1.1