Deprecate support for Python 3.7 (With #137)

[Quantalabs]

NumPy has officially dropped support for Python 3.7, though Python won't end-of-life it for more than 9 months. This of course brings up the question of whether we, as epispot, should follow suit, considering that NumPy is one of our core dependencies and also that most of our other dependencies are in one way or another dependent on NumPy.

Originally posted by @quantum9Innovation in #137 (comment)

It has been decided that support for 3.7 should be deprecated. the following are the steps for what needs to be done:

• Merge [dep]: Update numpy requirement from ~=1.21.5 to ~=1.22.0 #137
• Remove 3.7 from testing #139
• Remove 3.7 from supported python versions in requirements/ folder and in setup.py #140
• Add deprecations to release notes for new version, and the v3.0.0 GAR. #141

[Quantalabs]

New branch created for this issue. 3.7-deprecation

[Quantalabs]

3.7 has been removed as a build requirement. Waiting for merge of #137 to be able to work on #140 and #141

[quantum9Innovation]

#137 is currently being held up by #143, so we'll finish that as soon as possible

[Quantalabs]

Newer numpy version available, waiting on new dependabot PR.