update bitbucket ssh key

add-or-replace-new-bitbucket-ssh-key.sh

# bitbucket changes keys on 20. Juni 2023. See: https://bitbucket.org/blog/ssh-host-key-changes

# check if the bitbucket ssh key is already in place
if [[ $(ssh git@bitbucket.org host_key_info | grep -c ybgmFkzwOSotHTHLJgHO0QN8L0xErw6vd0VhFA9m3SM) -eq 1 ]]; then
  printf 'key is already correctly in place';
else
  # if the bitbucket ssh key is not in place, then add it
  ssh-keygen -R bitbucket.org && curl https://bitbucket.org/site/ssh >> ~/.ssh/known_hosts

  if [[ $(ssh git@bitbucket.org host_key_info | grep -c ybgmFkzwOSotHTHLJgHO0QN8L0xErw6vd0VhFA9m3SM) -eq 1 ]]; then
    printf 'key has been added to your ~/.ssh/known_hosts file';
  fi
fi