feat: add support for Python 3.13 #4504

Job	Run time
mypy	1m 10s
validate	17s
pyright	40s
slotscheck	27s
Test server integration (uvicorn<0.27.0)	40s
Test server integration (uvicorn>=0.27.0)	1m 2s
Test Minimal Application with Base Dependencies	13s
Test Minimal Pydantic 1 application	15s
test-platform-compat	0s
test (3.10) / test	1m 55s
test (3.11) / test	1m 42s
test (3.12) / test	1m 59s
test (3.13) / test	2m 0s
test (3.8) / test	1m 59s
test (3.9) / test	1m 44s
build-docs	2m 43s
sonar	0s
codeql	0s
upload-test-coverage	0s
	18m 46s

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