Try to clean before update

.gitlab-ci.yml

@@ -33,6 +33,6 @@ build:
 test:
   stage: test
   before_script:
-    - apt update -qy && apt -y install python3-colorama python3-psutil
+    - apt clean && apt update -qy && apt -y install python3-colorama python3-psutil
   script:
     - python3 test/test.py "$EXEC_NAME"