Fetch the labels from the PR and process the ones related to the changelog.

def get_changelog_types(pr_payload):
    """
    Fetch the labels from the PR and process the ones related to the changelog.
    """
    changelog_labels = []
    for name in get_pr_labels(pr_payload):
        if name.startswith(CHANGELOG_LABEL_PREFIX):
            # only add the name, e.g. for `changelog/Added` it's just `Added`
            changelog_labels.append(name.split(CHANGELOG_LABEL_PREFIX)[1])

    return changelog_labels