The amazon and google providers don't include necessary datafiles in them.

They were previously included in the sdist via MANIFEST.in (see https://github.com/apache/airflow/pull/12196) and in the bdist via include_package_data from the top level setup.py

Both of these are currently missing.

I've put this against 2.0.0-beta1, it _could_ be changed separately as providers are separate releases.
dev/provider_packages/prepare_provider_packages.py
"""
    Gets long description of the package.
    :param provider_package_id: package id
    :param backport_packages: whether to prepare regular (False) or backport (True) packages
    :return: content of the description (BACKPORT_PROVIDER_README/README file)
    """
    package_folder = get_target_providers_package_folder(provider_package_id)
    readme_file = os.path.join(
        package_folder, "BACKPORT_PROVIDER_README.md" if backport_packages else "README.md"
    )
    if not os.path.exists(readme_file):
        return ""
    with open(readme_file, encoding='utf-8', mode="r") as file:
        readme_contents = file.read()
    copying = True
    long_description = ""
    for line in readme_contents.splitlines(keepends=True):
        if line.startswith("**Table of contents**"):
            copying = False
            continue
        header_line = "## Backport package" if backport_packages else "## Provider package"
        if line.startswith(header_line):
            copying = True
        if copying:
            long_description += line
    return long_description
def get_package_release_version(