fix requirement_files path

.gitlab-ci.yml

@@ -64,5 +64,5 @@ depandabot:
     needs: [ "python_install" ]
     variables:
         PROJECT_PATH: "tests/depandabot_project"
-        REQUIREMENTS_FILE_PATH: "requirements.in"
-        OUTPUT_FILE_PATH: "requirements.txt"
+        REQUIREMENTS_FILE_PATH: "${PROJECT_PATH}/requirements.in"
+        OUTPUT_FILE_PATH: "${PROJECT_PATH}/requirements.txt"