Enhancement/pydantic v2

[Tinitto]

Why

Closes #25

Pydantic V2 was a major rewrite of pydantic. Pydantic V2 is much faster than pydantic v1; and more strict.
Many other projects are expected to move on to pydantic V2. We should not be left behind.

What was done

• Migrated the code to pydantic v2
• Fixed failing tests
• Updated benchmark results
• Updated documentation to limit to python +v3.8

How to test

• Clone the repo

git clone https://github.com/sopherapps/pydantic-redis.git

• Checkout this branch

cd pydantic-redis
git checkout enhancement/pydantic-v2

• Create a virtual environment and activate it

virtualenv -p /usr/bin/python3.8 env
source env/bin/activate

• Install the dependencies

pip install -r requirements.txt

• Run the tests command

pytest --benchmark-disable

• Run benchmarks

pytest test/test_benchmarks.py --benchmark-columns=mean,min,max --benchmark-name=short