feat: add support for Python 3.13 #4509

Job	Run time
pyright	13s
validate	18s
mypy	16s
slotscheck	14s
Test server integration (uvicorn<0.27.0)	12s
Test server integration (uvicorn>=0.27.0)	11s
Test Minimal Application with Base Dependencies	8s
Test Minimal Pydantic 1 application	10s
test-platform-compat	0s
test (3.11) / test	8s
test (3.10) / test	13s
test (3.12) / test	10s
test (3.8) / test	11s
test (3.13) / test	11s
test (3.9) / test	11s
upload-test-coverage	0s
build-docs	15s
codeql	0s
sonar	0s
	3m 1s

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