Update patool requirement from <1.13,>=1.12 to >=1.12,<3.1

Updates the requirements on [patool](https://github.com/wummel/patool) to permit the latest version.
- [Release notes](https://github.com/wummel/patool/releases)
- [Changelog](https://github.com/wummel/patool/blob/master/doc/changelog.txt)
- [Commits](wummel/patool@upstream/1.12...3.0.1)

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

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

requirements.txt

@@ -11,7 +11,7 @@ gevent==20.12.0  # http://www.gevent.org/changelog.html
 # Limit greenlet version for binary compatibility with gevent 20.12 wheels
 greenlet==1.0.0
 werkzeug>=0.16,<0.17  # https://github.com/pallets/werkzeug/blob/master/CHANGES
-patool>=1.12,<1.13  # https://github.com/wummel/patool/blob/master/doc/changelog.txt
+patool>=1.12,<3.1  # https://github.com/wummel/patool/blob/master/doc/changelog.txt
 bcrypt>=3.1,<3.2  # https://github.com/pyca/bcrypt/
 chardet>=3.0,<3.1  # https://pypi.python.org/pypi/chardet
 babel>=2.6,<2.7  # http://babel.pocoo.org/en/latest/changelog.html