fix(.gitlab-ci.yml): use ssh instead of https for github push in deploy-release

  REG_VERSION: 0.16.1

  GL_TOKEN: $GL_TOKEN

  GH_TOKEN: $GH_TOKEN

  SSH_PRIVATE_KEY: $SSH_PRIVATE_KEY

services:

  - name: docker:20-dind

    alias: docker

  - apk add --no-cache gnupg coreutils

  # login the gitlab container registry

  - echo $CI_REGISTRY_PASSWORD | docker login $CI_REGISTRY -u $CI_REGISTRY_USER --password-stdin

  # install ssh-agent if not already installed, it is required by Docker

  - 'command -v ssh-agent >/dev/null || ( apt-get update -y && apt-get install openssh-client -y )'

  # run ssh-agent (inside the build environment)

  - eval $(ssh-agent -s)

  # give the right permissions, otherwise ssh-add will refuse to add files

  - chmod 400 "$SSH_PRIVATE_KEY"

  # add the SSH key stored in SSH_PRIVATE_KEY file type CI/CD variable to the agent store

  - ssh-add "$SSH_PRIVATE_KEY"

  # create the SSH directory and give it the right permissions

  - mkdir -p ~/.ssh

  - chmod 700 ~/.ssh

stages:

  - test-python-install

    - make push-docker-ci TAG=$(python get_version.py)

    # Add our Github remote repository and fined-grained token authentication

    - echo "GH_TOKEN=${GH_TOKEN}"

    - GH_TOKEN=${GH_TOKEN} git remote add github_origin https://oauth2:${GH_TOKEN}@github.com/HIP-infrastructure/datahipy

    - GH_TOKEN=${GH_TOKEN} git remote add github_origin git@github.com:HIP-infrastructure/datahipy.git

    # Push commits created by semantic-release for version change and changelog

    - git push github_origin $CI_COMMIT_REF_NAME

    # Push the new tag created by semantic-release