feat: add support for Python 3.13 #4514

Job	Run time
mypy	1m 9s
pyright	48s
slotscheck	20s
Test Minimal Application with Base Dependencies	17s
Test server integration (uvicorn<0.27.0)	43s
Test Minimal Pydantic 1 application	15s
Test server integration (uvicorn>=0.27.0)	48s
test-platform-compat	0s
validate	19s
test (3.10) / test	1m 46s
test (3.11) / test	1m 39s
test (3.12) / test	1m 55s
test (3.13) / test	1m 55s
test (3.8) / test	1m 56s
test (3.9) / test	1m 50s
build-docs	2m 25s
codeql	0s
upload-test-coverage	0s
sonar	0s
	18m 5s

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