[client] Deprecate Python 3.8

Author: SamuelHassine

.drone.yml

@@ -7,12 +7,6 @@ steps:
     image: python:3.11
     commands:
       - sleep 180
-  - name: client-test-38
-    image: python:3.8
-    commands:
-      - pip3 install -r requirements.txt --user
-      - pip3 install -r test-requirements.txt --user
-      - python3 -m pytest --no-header -vv --disable-warnings --cov=pycti --drone
   - name: client-test-39
     image: python:3.9
     commands: