Bump lxml from 4.6.5 to 4.9.1 (#96)

* Bump lxml from 4.6.5 to 4.9.1

Bumps [lxml](https://github.com/lxml/lxml) from 4.6.5 to 4.9.1.
- [Release notes](https://github.com/lxml/lxml/releases)
- [Changelog](https://github.com/lxml/lxml/blob/master/CHANGES.txt)
- [Commits](lxml/lxml@lxml-4.6.5...lxml-4.9.1)

---
updated-dependencies:
- dependency-name: lxml
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

* bump version

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Felipe López <flh.1989@gmail.com>

cep/version.py

@@ -1 +1 @@
-__version__ = '0.2.0'
+__version__ = '0.2.1'

requirements.txt

@@ -1,4 +1,4 @@
 requests==2.26.0
 clabe==1.2.4
-lxml==4.6.5
+lxml==4.9.1
 dataclasses>=0.6;python_version<"3.7"

setup.py

@@ -25,7 +25,7 @@
     install_requires=[
         'requests>=2.25,<2.27',
         'clabe>=1.2.4,<1.3',
-        'lxml>=4.6.2,<4.7',
+        'lxml>=4.6.2,<4.10',
         'dataclasses>=0.6;python_version<"3.7"',
     ],
     classifiers=[