feat: add mypy job

mentioned in commit 9587a06c

mentioned in merge request Orange-OpenSource/lfn/ci_cd/chained-ci-py!260 (merged)

mentioned in merge request gaia-x/data-infrastructure-federation-services/deployment-scenario/credential-generator!79 (closed)

mentioned in merge request gaia-x/data-infrastructure-federation-services/deployment-scenario/catalogue/provider-catalogue!108 (merged)

mentioned in merge request gaia-x/data-infrastructure-federation-services/deployment-scenario/user-agent!58 (merged)

mentioned in merge request gaia-x/data-infrastructure-federation-services/deployment-scenario/vc-issuer!34 (closed)

mentioned in merge request to-be-continuous/samples/python-with-gcp-wif!5 (merged)

mentioned in merge request to-be-continuous/samples/python-docker-compose!5 (merged)

mentioned in merge request to-be-continuous/samples/python-on-azure!45 (merged)

mentioned in merge request to-be-continuous/samples/python-library!23 (merged)

mentioned in merge request to-be-continuous/samples/python-helmfile-on-kubernetes!71 (merged)

mentioned in merge request to-be-continuous/samples/python-on-kubernetes!60 (merged)

mentioned in merge request to-be-continuous/samples/python-serverless-on-aws!142 (merged)

mentioned in merge request gaia-x/data-infrastructure-federation-services/deployment-scenario/credential-generator!87 (closed)

mentioned in merge request gaia-x/data-infrastructure-federation-services/deployment-scenario/vc-issuer!45 (closed)