change: Bump minimum supported Python version to 3.9 and add 3.13 to CIs #892
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setup.pyas a command line tool since this is now deprecated.download_as_string()withdownload_as_bytes()in storage tests.RELEASE NOTE: Dropped support for Python 3.7 and 3.8 and Deprecated Python 3.9. Developers should use Python 3.9 or higher with the Admin SDK however Python 3.10 is recommended.