add automatic zenodo updates

see example: https://git.gfz-potsdam.de/EnMAP/sicor/-/blob/main/.zenodo.json?ref_type=heads

for gitlab-ci.yml:

send-snapshot:
  stage: deploy
  dependencies:
      - test_s2downloader
  script:
      - source activate ci_env
      - if [[ ! $CI_COMMIT_TAG =~ ^v?[0-9]+\.[0-9]+ ]]; then exit 0; fi
      - pip install -U gitlab2zenodo
      - git archive --format zip --output sicor-${CI_COMMIT_TAG}.zip ${CI_COMMIT_TAG}
      - g2z-send -m .zenodo.json sicor-${CI_COMMIT_TAG}.zip -p
  only:
      - /^v\d+\.\d+\.\d+([abc]\d*)?$/
  except:
      - dev

for using zenodo sandbox: - g2z-send -s -m .zenodo.json sicor-${CI_COMMIT_TAG}.zip -p