Installation issues and official python 3.8

[eldraco]

Describe the bug
Now slips in develop version requires python3.8 to run stable.
However in a fresh install in Ubuntu with conda, the pip requirements.txt file installation fails due to mismatched requirements versions.

To Reproduce
Steps to reproduce the behavior:

1. conda create -n test-slips python==3.8
2. conda activate test-slips
3. python -m pip install -r install/requirements.txt

Expected behavior
It should install the packages without problem.

Branch
Develop

Environment (please complete the following information):

• OS: Linux 5.15.0-75-generic Invalid timestamps in eve.json in Suricata  #82~20.04.1-Ubuntu SMP Wed Jun 7 19:37:37 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
• Version 5.15.0-75-generic
• Python version 3.8
• Are you running slips in docker or locally? no

Additional context
This should be solved by migrating to a newer python version too.

The minimum requirements.txt file that worked with 3.8 was

maxminddb==2.2.0
numpy
watchdog==2.1.6
redis>=3.5.2,<=3.5.3
urllib3==1.26.7
pandas
tzlocal==2.1
cabby==0.1.23
stix2==3.0.1
certifi==2019.11.28
tensorflow
colorama==0.4.4
Keras
validators==0.18.2
ipwhois==1.2.0
matplotlib==3.1.2
recommonmark==0.7.1
scikit_learn==0.24.2
slackclient==2.9.3
psutil==5.8.0
six==1.15.0
pytest==6.2.5
pytest-mock
pytest-xdist==2.4.0
slackclient==2.9.3
scipy
scikit-learn
GitPython==3.1.14
protobuf==3.20
blinker
exclusiveprocess
setuptools
pytest-dependency
whois
wheel
flask
tldextract
tqdm
termcolor
viztracer
yappi
pytest-sugar
memray
aid_hash
black
ruff
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