Raise minimum required Python versions across remotes

[jhlegarreta]

Description

Some remotes have Python 3.8 as their minimum required version. Python 3.8 is at EOL since 2024-10-07:
https://devguide.python.org/versions/

Steps to Reproduce

N/A

Expected behavior

EOL Python versions are not the minimum compatible version.

Actual behavior

Python 3.8 is listed as the minimum compatible version.

Reproducibility

N/A

Versions

N/A

Environment

N/A

Additional Information

X-ref: InsightSoftwareConsortium/ITKLabelErodeDilate#41 (comment)