Use PyPi packages instead of the wheels from Github for the ITDE and exaslct

[tkilias]

Background

• Currently, we use the wheel package from the Github releases for the ITDE and exaslct

exasol_script_languages_container_tool = { url = "https://github.com/exasol/script-languages-container-tool/releases/download/0.15.0/exasol_script_languages_container_tool-0.15.0-py3-none-any.whl" } exasol-integration-test-docker-environment = {url = "https://github.com/exasol/integration-test-docker-environment/releases/download/0.11.0/exasol_integration_test_docker_environment-0.11.0-py3-none-any.whl"}

• We now released both on PyPi
• It is in general better to pull from PyPi this allows also to push this package to PyPi

Acceptance Critieria

• Use PyPi packages instead of the wheels from Github for the ITDE and exaslct