Bump pydantic[email] from 1.8.2 to 1.9.0

Bumps [pydantic[email]](https://github.com/samuelcolvin/pydantic) from 1.8.2 to 1.9.0.
- [Release notes](https://github.com/samuelcolvin/pydantic/releases)
- [Changelog](https://github.com/samuelcolvin/pydantic/blob/master/HISTORY.md)
- [Commits](pydantic/pydantic@v1.8.2...v1.9.0)

---
updated-dependencies:
- dependency-name: pydantic[email]
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements.txt

@@ -1,3 +1,3 @@
 clabe==1.2.4
-pydantic[email]==1.8.2
+pydantic[email]==1.9.0
 python-dateutil==2.8.2

setup.py

@@ -26,7 +26,7 @@
     python_requires='>=3.6',
     install_requires=[
         'clabe>=1.2,<1.3',
-        'pydantic[email]>=1.6,<1.9',
+        'pydantic[email]>=1.6,<1.10',
         'dataclasses>=0.6;python_version<"3.7"',
         'python-dateutil>=2.7.0',
     ],