feat: add support for Python 3.13 #4532

Job	Run time
mypy	1m 8s
pyright	46s
slotscheck	25s
Test server integration (uvicorn<0.27.0)	38s
Test Minimal Application with Base Dependencies	15s
Test server integration (uvicorn>=0.27.0)	40s
Test Minimal Pydantic 1 application	25s
test-platform-compat	0s
validate	56s
test (3.10) / test	2m 21s
test (3.11) / test	1m 53s
test (3.12) / test	3m 6s
test (3.13) / test	2m 55s
test (3.8) / test	2m 47s
test (3.9) / test	2m 10s
build-docs	3m 24s
upload-test-coverage	0s
sonar	0s
codeql	0s
	23m 49s

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