Update dependencies to work with Python 3.10

The server is being upgraded to a newer version of the OS and Python 3.10
is being installed.
Dependencies needs to be updated in order to work with this version of
Python.

Author: diegorusso

deploy-requirements.txt

@@ -1,3 +1,3 @@
-.
+-r requirements.txt
 psycopg2==2.9.3
 gunicorn==20.1.0

requirements.txt

@@ -1,3 +1,3 @@
 Django>=1.11,<2.2
-isodate>=0.4.7,<0.6
-matplotlib>=1.4.3,<2.0
+isodate==0.6.1
+matplotlib<3.8

setup.py

@@ -9,7 +9,7 @@
     download_url="https://github.com/tobami/codespeed/tags",
     license='GNU Lesser General Public License version 2.1',
     keywords=['benchmarking', 'visualization'],
-    install_requires=['django>=1.11<2.2', 'isodate>=0.4.7,<0.6', 'matplotlib>=1.4.3,<2.0'],
+    install_requires=['django', 'isodate', 'matplotlib'],
     packages=find_packages(exclude=['ez_setup', 'sample_project']),
     long_description='README.md',
     long_description_content_type="text/markdown",