Update python to version 3.13

[exalate-issue-sync]

Python buildpack supports up to python 3.14: https://github.com/cloudfoundry/python-buildpack/releases

Django 5.2 supports python 3.13 https://docs.djangoproject.com/en/6.0/faq/install/#what-python-version-can-i-use-with-django

QA Notes

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DEV Notes

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Design

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See full ticket and images here: FECFILE-2943